The Built-In Liner GRS Certified Recycled Poly Ventilating 3.5" Short
Men’s Sizing
Kids Sizing
Women’s Tops & Jackets
Neck Measuring: Measure around the base of your own neck, keeping one finger between your neck and the tape measure.
Sleeve Measuring: Place your hand on your hip with your arm bent at 90 degrees. Measure from the middle of the back of your neck, across your shoulder and down your arm to the wrist.
| Size | Bust | Waist | Hip |
|---|---|---|---|
| XS | 31.5" (80cm)-32.5" (83cm) | 24" (61cm)-25" (64cm) | 34.5" (88cm)-35.5" (90cm) |
| S | 33.5" (85cm)-34.5" (88cm) | 26" (66cm)-27" (67cm) | 36.5" (93cm)-37.5" (95cm) |
| M | 35.5" (90cm)-36.5" (93cm) | 28" (71cm)-29" (74cm) | 38.5" (98cm)-39.5" (100cm) |
| L | 37.5" (95cm)-39" (99cm) | 30" (76cm)-32" (81cm) | 40.5" (103cm)-42" (107cm) |
| XL | 39.5" (100cm)-41" (104cm) | 33" (84cm)-35" (89cm) | 42.5" (108cm)-44" (112cm) |
| XXL | 41.5" (105cm)-43" (109cm) | 36" (91cm)-38" (97cm) | 44.5" (113cm)-46" (117cm) |
| 1X (18-20) | 45" (114cm)-47" (119cm) | 39" (99cm)-41" (104cm) | 49" (124cm)-51" (130cm) |
| 2X (22-24) | 48" (123cm)-51" (130cm) | 42" (107cm)-45" (114cm) | 52" (132cm)-55" (140cm) |
| 3X (26-28) | 52" (132cm)-55" (140cm) | 46" (117cm)-49" (124cm) | 56" (142cm)-59" (150cm) |
Women’s Bras
| Size | Bust | Bra Size |
|---|---|---|
| XS | 31.5" (80cm) - 32.5" (83cm) | 32A, 32B |
| S | 33.5" (85cm) - 34.5" (88cm) | 32C, 34A, 34B |
| M | 35.5" (90cm) - 36.5" (93cm) | 32D, 32DD, 34C, 34D, 36A, 36B |
| L | 37.5" (95cm) - 39" (99cm) | 34DD, 36C, 36D, 38B |
| XL | 39.5" (100cm) - 41" (104cm) | 36DD, 38C, 38D, 40C |
| XXL | 41.5" (105cm) - 43" (109cm) | 38DD, 40D, 40DD |
| 1X (18-20) | 45" (114cm) - 47" (119cm) | 42C, 42D, 42DD, 44C |
| 2X (22-24) | 48" (123cm) - 51" (130cm) | 44D, 44DD, 46C, 46D, 46DD, 48C |
| 3X (26-28) | 52" (132cm) - 55" (140cm) | 48D, 48DD, 50C, 50D, 50DD |
Women’s Seamless Sizes
| Size | Bust | Waist | Hip |
|---|---|---|---|
| XS/S | 34" (86cm) | 27" (68cm) | 37" (94cm) |
| S/M | 36" (91cm) | 29" (74cm) | 39" (99cm) |
| M/L | 38" (96cm) | 31" (79cm) | 41" (104cm) |
Women’s Bottoms
For alpha sizes — use the waist and hip measurement as a guide to help pick the right size. If you find you are between sizes, think about what activites you would be doing and order the smaller size for a tighter fit or the larger size for a looser fit. If your waist and hip measurements correspond to two different sizes, order to fit your hip measurement.
For numeric sizes — Use your waist as a guide. Our pants should fit like your regular number sized pants, if you're a 6 in other brands you should be a 6 in our pants.
| Size | Pant Size | Numeric Size | Waist | Hip |
|---|---|---|---|---|
| XS | 24 25 |
0 2 |
24" (61cm) 25" (64cm) |
34.5" (88cm) 35.5" (90cm) |
| S | 26 27 |
4 6 |
26" (66cm) 27" (69cm) |
36.5" (93cm) 37.5" (95cm) |
| M | 28 29 |
8 10 |
28" (71cm) 29 (74cm) |
38.5" (98cm) 39.5" (100cm) |
| L | 30 31 |
12 14 |
30" (76cm) 32" (81cm) |
40.5" (103cm) 42" (107cm) |
| XL | 32 33 |
16 | 34" (86cm) | 44" (112cm) |
| XXL | 33 34 |
18 | 36" (91cm) | 46" (117cm) |
| 1X | – | 18-20 | 39" (99cm) 41" (104cm) |
49" (124cm) 51" (130cm) |
| 2X | – | 22-24 | 42" (107cm) 45" (114cm) |
52" (132cm) 55" (140cm) |
| 3X | – | 26-28 | 46" (117cm) 49" (124cm) |
56" (142cm) 59" (150cm) |
Men’s Tops & Jackets
Neck Measuring: Measure around the base of your own neck, keeping one finger between your neck and the tape measure.
Sleeve Measuring: Place your hand on your hip with your arm bent at 90 degrees. Measure from the middle of the back of your neck, across your shoulder and down your arm to the wrist.
| Size | Chest | Waist | Hip |
|---|---|---|---|
| S | 35" (89cm)-37" (94cm) | 28" (71cm)-31" (79cm) | 34" (86cm)-37" (94cm) |
| M | 38" (97cm)-41" (104cm) | 32" (81cm)-34" (86cm) | 38" (97cm)-41" (104cm) |
| L | 42" (107cm)-44" (112cm) | 35" (89cm)-38" (97cm) | 42" (107cm)-44" (112cm) |
| XL | 45" (114cm)-47" (119cm) | 39" (99cm)-41" (104cm) | 45" (114cm)-47" (119cm) |
| 2XL | 48" (123cm)-50" (127cm) | 43" (109cm)-45" (114cm) | 48" (123cm)-50" (127cm) |
Men’s Bottoms
For alpha sizes — use the waist and hip measurement as a guide to help pick the right size. If you find you are between sizes, think about what activites you would be doing and order the smaller size for a tighter fit or the larger size for a looser fit. If your waist and hip measurements correspond to two different sizes, order to fit your hip measurement.
For numeric sizes — Use your waist as a guide. Our pants should fit like your regular number sized pants, if you're a 32 in other brands you should be a 32 in our pants.
| Alpha Pant Size | Waist | Hip |
|---|---|---|
| S | 28" (71cm) – 31" (79cm) | 35" (89cm) – 37" (94cm) |
| M | 32" (81cm) – 34" (86cm) | 38" (97cm) – 41" (104cm) |
| L | 35" (89cm) - 38" (97cm) | 42" (107cm) - 44" (112cm) |
| XL | 39" (99cm) – 41" (104cm) | 45" (114cm) - 47" (119cm) |
| 2XL | 43" (109cm) – 45" (114cm) | 48" (123cm) - 50" (127cm) |
| Numeric Pant Size | Waist | Hip |
|---|---|---|
| 30 31 |
31.5" (80cm) 32.5" (83cm) |
37.5" (95cm) 38.5" (98cm) |
| 32 33 |
33.5" (85cm) 34.5" (88cm) |
39.5" (100cm) 40.5" (103cm) |
| 34 35 |
35.5" (90cm) 36.5" (93cm) |
36.5" (93cm) 42.5" (108cm) |
| 36 | 37.5" (95cm) | 43.5" (110cm) |
| 38 | 39.5" (100cm) | 45.5" (116cm) |
Kids & Youth Tops & Bottoms
Below are the body measurements following North American standards for kids/youth gender-inclusive sizing.
Please take note, sizing is recognized differently between USA and Canada:
| USA | XS (5/6) | S (7/8) | M (10/12) | L (14/16) | XL (18/20) |
| Canada | S (5/6) | M (7/8) | L (10/12) | XL (14/16) | XXL (18/20) |
| Size | Height | Chest | Waist | Hip | Arm length | Inseam |
|---|---|---|---|---|---|---|
| 5/6 | 45-49" (114.3–124.5 cm) | 23-24" (58.4–61.0 cm) | 21-23" (53.3–58.4 cm) | 23-25.5" (58.4–64.8 cm) | 21-23" (53.3–58.4 cm) | 19-21.5" (48.3–54.6 cm) |
| 7/8 | 50-54" (127.0–137.2 cm) | 24.5-27.5" (62.2–69.9 cm) | 23-25" (58.4–63.5 cm) | 26-29.5" (66.0–74.9 cm) | 23-25" (58.4–63.5 cm) | 22-24.5" (55.9–62.2 cm) |
| 10/12 | 55-60" (139.7–152.4 cm) | 28-32" (71.1–81.3 cm) | 25-28" (63.5–71.1 cm) | 30-33" (76.2–83.8 cm) | 25-29" (63.5–73.7 cm) | 25-28.5" (63.5–72.4 cm) |
| 14/16 | 61-64" (154.9–162.6 cm) | 32.5-35" (82.6–88.9 cm) | 28-29" (71.1–73.7 cm) | 33.5-37" (85.1–94.0 cm) | 29-30" (73.7–76.2 cm) | 29-30" (73.7–76.2 cm) |
| 18/20 | 65-66" (165.1–167.6 cm) | 35.5-38" (90.2–96.5 cm) | 29-32" (73.7–81.3 cm) | 37.5-38.5" (95.3–97.8 cm) | 30-31" (76.2–78.7 cm) | 30.5-31" (77.5–78.7 cm) |
Complete the Look
Run short with pocket short liner and reflectivity made with 92% recycled polyester. Elasticated waistband with reflective tape, side mesh ventilation panels, and built-in short liner with phone pocket. Ready for tempo work, night runs, and heat-wave training.
-
Responsibly Made
Ethically sourced and produced using socially responsible practices
-
Moisture Wicking, Quick Drying
Draws sweat away from your skin to keep you dry and comfortable
-
Reflectivity
Reflectivity for added visibility in low-light conditions
-
Stretch woven
Lightweight woven with stretch for comfort and mobility
-
GRS Certified recycled poly
GRS Certified recycled polyester fabric
-
Elasticated waistband
For a comfortable fit
-
Mesh detailing
Increases ventilation for better airflow
-
Built in short liner with pockets
For inner stability and storage options
-
Fit Semi-Fitted
Semi-fitted: contours your body with a bit of room
-
Inseam length
3.5"
Fabric Content
- 92% Recycled Polyester
- 8% Spandex
Care Instructions
- Wash with similar colours
- Use cold water
- Machine wash gentle cycle
- Remove immediately after washing
- Use only non-chlorine bleach when needed
- Tumble dry on low heat
- Iron on low heat if needed
- Do not dry clean
Style Code: 10C0170
Choose options
Men’s Sizing
Kids Sizing
Women’s Tops & Jackets
Neck Measuring: Measure around the base of your own neck, keeping one finger between your neck and the tape measure.
Sleeve Measuring: Place your hand on your hip with your arm bent at 90 degrees. Measure from the middle of the back of your neck, across your shoulder and down your arm to the wrist.
| Size | Bust | Waist | Hip |
|---|---|---|---|
| XS | 31.5" (80cm)-32.5" (83cm) | 24" (61cm)-25" (64cm) | 34.5" (88cm)-35.5" (90cm) |
| S | 33.5" (85cm)-34.5" (88cm) | 26" (66cm)-27" (67cm) | 36.5" (93cm)-37.5" (95cm) |
| M | 35.5" (90cm)-36.5" (93cm) | 28" (71cm)-29" (74cm) | 38.5" (98cm)-39.5" (100cm) |
| L | 37.5" (95cm)-39" (99cm) | 30" (76cm)-32" (81cm) | 40.5" (103cm)-42" (107cm) |
| XL | 39.5" (100cm)-41" (104cm) | 33" (84cm)-35" (89cm) | 42.5" (108cm)-44" (112cm) |
| XXL | 41.5" (105cm)-43" (109cm) | 36" (91cm)-38" (97cm) | 44.5" (113cm)-46" (117cm) |
| 1X (18-20) | 45" (114cm)-47" (119cm) | 39" (99cm)-41" (104cm) | 49" (124cm)-51" (130cm) |
| 2X (22-24) | 48" (123cm)-51" (130cm) | 42" (107cm)-45" (114cm) | 52" (132cm)-55" (140cm) |
| 3X (26-28) | 52" (132cm)-55" (140cm) | 46" (117cm)-49" (124cm) | 56" (142cm)-59" (150cm) |
Women’s Bras
| Size | Bust | Bra Size |
|---|---|---|
| XS | 31.5" (80cm) - 32.5" (83cm) | 32A, 32B |
| S | 33.5" (85cm) - 34.5" (88cm) | 32C, 34A, 34B |
| M | 35.5" (90cm) - 36.5" (93cm) | 32D, 32DD, 34C, 34D, 36A, 36B |
| L | 37.5" (95cm) - 39" (99cm) | 34DD, 36C, 36D, 38B |
| XL | 39.5" (100cm) - 41" (104cm) | 36DD, 38C, 38D, 40C |
| XXL | 41.5" (105cm) - 43" (109cm) | 38DD, 40D, 40DD |
| 1X (18-20) | 45" (114cm) - 47" (119cm) | 42C, 42D, 42DD, 44C |
| 2X (22-24) | 48" (123cm) - 51" (130cm) | 44D, 44DD, 46C, 46D, 46DD, 48C |
| 3X (26-28) | 52" (132cm) - 55" (140cm) | 48D, 48DD, 50C, 50D, 50DD |
Women’s Seamless Sizes
| Size | Bust | Waist | Hip |
|---|---|---|---|
| XS/S | 34" (86cm) | 27" (68cm) | 37" (94cm) |
| S/M | 36" (91cm) | 29" (74cm) | 39" (99cm) |
| M/L | 38" (96cm) | 31" (79cm) | 41" (104cm) |
Women’s Bottoms
For alpha sizes — use the waist and hip measurement as a guide to help pick the right size. If you find you are between sizes, think about what activites you would be doing and order the smaller size for a tighter fit or the larger size for a looser fit. If your waist and hip measurements correspond to two different sizes, order to fit your hip measurement.
For numeric sizes — Use your waist as a guide. Our pants should fit like your regular number sized pants, if you're a 6 in other brands you should be a 6 in our pants.
| Size | Pant Size | Numeric Size | Waist | Hip |
|---|---|---|---|---|
| XS | 24 25 |
0 2 |
24" (61cm) 25" (64cm) |
34.5" (88cm) 35.5" (90cm) |
| S | 26 27 |
4 6 |
26" (66cm) 27" (69cm) |
36.5" (93cm) 37.5" (95cm) |
| M | 28 29 |
8 10 |
28" (71cm) 29 (74cm) |
38.5" (98cm) 39.5" (100cm) |
| L | 30 31 |
12 14 |
30" (76cm) 32" (81cm) |
40.5" (103cm) 42" (107cm) |
| XL | 32 33 |
16 | 34" (86cm) | 44" (112cm) |
| XXL | 33 34 |
18 | 36" (91cm) | 46" (117cm) |
| 1X | – | 18-20 | 39" (99cm) 41" (104cm) |
49" (124cm) 51" (130cm) |
| 2X | – | 22-24 | 42" (107cm) 45" (114cm) |
52" (132cm) 55" (140cm) |
| 3X | – | 26-28 | 46" (117cm) 49" (124cm) |
56" (142cm) 59" (150cm) |
Men’s Tops & Jackets
Neck Measuring: Measure around the base of your own neck, keeping one finger between your neck and the tape measure.
Sleeve Measuring: Place your hand on your hip with your arm bent at 90 degrees. Measure from the middle of the back of your neck, across your shoulder and down your arm to the wrist.
| Size | Chest | Waist | Hip |
|---|---|---|---|
| S | 35" (89cm)-37" (94cm) | 28" (71cm)-31" (79cm) | 34" (86cm)-37" (94cm) |
| M | 38" (97cm)-41" (104cm) | 32" (81cm)-34" (86cm) | 38" (97cm)-41" (104cm) |
| L | 42" (107cm)-44" (112cm) | 35" (89cm)-38" (97cm) | 42" (107cm)-44" (112cm) |
| XL | 45" (114cm)-47" (119cm) | 39" (99cm)-41" (104cm) | 45" (114cm)-47" (119cm) |
| 2XL | 48" (123cm)-50" (127cm) | 43" (109cm)-45" (114cm) | 48" (123cm)-50" (127cm) |
Men’s Bottoms
For alpha sizes — use the waist and hip measurement as a guide to help pick the right size. If you find you are between sizes, think about what activites you would be doing and order the smaller size for a tighter fit or the larger size for a looser fit. If your waist and hip measurements correspond to two different sizes, order to fit your hip measurement.
For numeric sizes — Use your waist as a guide. Our pants should fit like your regular number sized pants, if you're a 32 in other brands you should be a 32 in our pants.
| Alpha Pant Size | Waist | Hip |
|---|---|---|
| S | 28" (71cm) – 31" (79cm) | 35" (89cm) – 37" (94cm) |
| M | 32" (81cm) – 34" (86cm) | 38" (97cm) – 41" (104cm) |
| L | 35" (89cm) - 38" (97cm) | 42" (107cm) - 44" (112cm) |
| XL | 39" (99cm) – 41" (104cm) | 45" (114cm) - 47" (119cm) |
| 2XL | 43" (109cm) – 45" (114cm) | 48" (123cm) - 50" (127cm) |
| Numeric Pant Size | Waist | Hip |
|---|---|---|
| 30 31 |
31.5" (80cm) 32.5" (83cm) |
37.5" (95cm) 38.5" (98cm) |
| 32 33 |
33.5" (85cm) 34.5" (88cm) |
39.5" (100cm) 40.5" (103cm) |
| 34 35 |
35.5" (90cm) 36.5" (93cm) |
36.5" (93cm) 42.5" (108cm) |
| 36 | 37.5" (95cm) | 43.5" (110cm) |
| 38 | 39.5" (100cm) | 45.5" (116cm) |
Kids & Youth Tops & Bottoms
Below are the body measurements following North American standards for kids/youth gender-inclusive sizing.
Please take note, sizing is recognized differently between USA and Canada:
| USA | XS (5/6) | S (7/8) | M (10/12) | L (14/16) | XL (18/20) |
| Canada | S (5/6) | M (7/8) | L (10/12) | XL (14/16) | XXL (18/20) |
| Size | Height | Chest | Waist | Hip | Arm length | Inseam |
|---|---|---|---|---|---|---|
| 5/6 | 45-49" (114.3–124.5 cm) | 23-24" (58.4–61.0 cm) | 21-23" (53.3–58.4 cm) | 23-25.5" (58.4–64.8 cm) | 21-23" (53.3–58.4 cm) | 19-21.5" (48.3–54.6 cm) |
| 7/8 | 50-54" (127.0–137.2 cm) | 24.5-27.5" (62.2–69.9 cm) | 23-25" (58.4–63.5 cm) | 26-29.5" (66.0–74.9 cm) | 23-25" (58.4–63.5 cm) | 22-24.5" (55.9–62.2 cm) |
| 10/12 | 55-60" (139.7–152.4 cm) | 28-32" (71.1–81.3 cm) | 25-28" (63.5–71.1 cm) | 30-33" (76.2–83.8 cm) | 25-29" (63.5–73.7 cm) | 25-28.5" (63.5–72.4 cm) |
| 14/16 | 61-64" (154.9–162.6 cm) | 32.5-35" (82.6–88.9 cm) | 28-29" (71.1–73.7 cm) | 33.5-37" (85.1–94.0 cm) | 29-30" (73.7–76.2 cm) | 29-30" (73.7–76.2 cm) |
| 18/20 | 65-66" (165.1–167.6 cm) | 35.5-38" (90.2–96.5 cm) | 29-32" (73.7–81.3 cm) | 37.5-38.5" (95.3–97.8 cm) | 30-31" (76.2–78.7 cm) | 30.5-31" (77.5–78.7 cm) |