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ADIDAS GC ALPHA SK8 - ALUMIN/ALUMIN/WONBEI
(Product No.: AD-JR9823-ADAT)
GRAND COURT ALPHA SHOES
- Regular fit
- Laces
- Upper: Leather / Other Materials
- Lining And Inlay Sole: Textile
- Outsole: Other Materials
- Rubber outsole
A modern take on the evolving Grand Court family, these Grand Court Alpha Shoes were built to add confidence to your everyday look. This pair goes all out with chunky features, fat laces and a padded tongue. Even the 3-Stripes vie for attention atop that soft suede upper. Down below, a Cloudfoam midsole offers a holistic comfort experience from step-in to stride. Whether you're planning on navigating the city streets or enjoying a casual night out with friends, these adidas shoes are hard to ignore.
Find more products here
Material description
Leather Upper
| Brand | adidas |
| Material type | Leather Upper |
| Fit | Regular |
| Theme | Lifestyle |
| Product group | SHOES |
| Gender | Women |
adidas Size Chart
The following size information is based on official adidas size guides. If a product-specific size specification differs, the information on the individual product page takes priority.
Adult Footwear
Foot length corresponds to the heel-to-toe measurement specified by adidas.
| EU | UK | US Men | US Women | Foot length |
|---|---|---|---|---|
| 36 | 3.5 | 4 | 5 | 22.1 cm |
| 36 2/3 | 4 | 4.5 | 5.5 | 22.5 cm |
| 37 1/3 | 4.5 | 5 | 6 | 22.9 cm |
| 38 | 5 | 5.5 | 6.5 | 23.3 cm |
| 38 2/3 | 5.5 | 6 | 7 | 23.8 cm |
| 39 1/3 | 6 | 6.5 | 7.5 | 24.2 cm |
| 40 | 6.5 | 7 | 8 | 24.6 cm |
| 40 2/3 | 7 | 7.5 | 8.5 | 25 cm |
| 41 1/3 | 7.5 | 8 | 9 | 25.5 cm |
| 42 | 8 | 8.5 | 9.5 | 25.9 cm |
| 42 2/3 | 8.5 | 9 | 10 | 26.3 cm |
| 43 1/3 | 9 | 9.5 | 10.5 | 26.7 cm |
| 44 | 9.5 | 10 | 11 | 27.1 cm |
| 44 2/3 | 10 | 10.5 | 11.5 | 27.6 cm |
| 45 1/3 | 10.5 | 11 | 12 | 28 cm |
| 46 | 11 | 11.5 | 12.5 | 28.4 cm |
| 46 2/3 | 11.5 | 12 | 13 | 28.8 cm |
| 47 1/3 | 12 | 12.5 | 13.5 | 29.3 cm |
| 48 | 12.5 | 13 | 14 | 29.7 cm |
| 48 2/3 | 13 | 13.5 | 14.5 | 30.1 cm |
| 49 1/3 | 13.5 | 14 | 15 | 30.5 cm |
| 50 | 14 | 14.5 | 15.5 | 31 cm |
| 50 2/3 | 14.5 | 15 | – | 31.4 cm |
| 51 1/3 | 15 | 16 | – | 31.8 cm |
| 52 2/3 | 16 | 17 | – | 32.6 cm |
| 53 1/3 | 17 | 18 | – | 33.5 cm |
| 54 2/3 | 18 | 19 | – | 34.3 cm |
| 55 2/3 | 19 | 20 | – | 35.2 cm |
Between sizes: adidas recommends choosing the smaller size for a tighter fit and the larger size for a looser fit.
How to measure foot length
- For the best fit, measure your feet at the end of the day.
- Stand on a sheet of paper with your heel lightly touching a wall.
- Mark the end of your longest toe and measure from the wall to the mark.
- Measure both feet and compare the appropriate measurement with the chart.
Kids' Footwear
Babies and Toddlers – approx. 0–3 years
| EU | UK | US | Foot length |
|---|---|---|---|
| 16 | 0k | 1k | 8.1 cm |
| 17 | 1k | 2k | 9 cm |
| 18 | 2k | 3k | 9.8 cm |
| 19 | 3k | 4k | 10.6 cm |
| 20 | 4k | 5k | 11.5 cm |
| 21 | 5k | 5.5k | 12.3 cm |
| 22 | 5.5k | 6k | 12.8 cm |
| 23 | 6k | 6.5k | 13.2 cm |
| 23.5 | 6.5k | 7k | 13.6 cm |
| 24 | 7k | 7.5k | 14 cm |
| 25 | 7.5k | 8k | 14.5 cm |
| 25.5 | 8k | 8.5k | 14.9 cm |
| 26 | 8.5k | 9k | 15.3 cm |
| 26.5 | 9k | 9.5k | 15.7 cm |
| 27 | 9.5k | 10k | 16.1 cm |
Children – approx. 4–7 years
| EU | UK | US | Foot length |
|---|---|---|---|
| 28 | 10k | 10.5k | 16.6 cm |
| 28.5 | 10.5k | 11k | 17 cm |
| 29 | 11k | 11.5k | 17.4 cm |
| 30 | 11.5k | 12k | 17.8 cm |
| 30.5 | 12k | 12.5k | 18.3 cm |
| 31 | 12.5k | 13k | 18.7 cm |
| 31.5 | 13k | 13.5k | 19.1 cm |
| 32 | 13.5k | 1 | 19.5 cm |
| 33 | 1 | 1.5 | 20 cm |
| 33.5 | 1.5 | 2 | 20.4 cm |
| 34 | 2 | 2.5 | 20.8 cm |
| 35 | 2.5 | 3 | 21.2 cm |
Youth and Teens – approx. 8–16 years
| EU | UK | US | Foot length |
|---|---|---|---|
| 35.5 | 3 | 3.5 | 21.6 cm |
| 36 | 3.5 | 4 | 22.1 cm |
| 36 2/3 | 4 | 4.5 | 22.5 cm |
| 37 1/3 | 4.5 | 5 | 22.9 cm |
| 38 | 5 | 5.5 | 23.3 cm |
| 38 2/3 | 5.5 | 6 | 23.8 cm |
| 39 1/3 | 6 | 6.5 | 24.2 cm |
| 40 | 6.5 | 7 | 24.6 cm |
| 40 2/3 | 7 | 7.5 | 25 cm |
Men's Clothing – Shirts and Tops
| Size | Chest | Waist | Hip |
|---|---|---|---|
| XS | 83–86 cm | 71–74 cm | 82–85 cm |
| S | 87–92 cm | 75–80 cm | 86–91 cm |
| M | 93–100 cm | 81–88 cm | 92–99 cm |
| L | 101–108 cm | 89–96 cm | 100–107 cm |
| XL | 109–118 cm | 97–106 cm | 108–116 cm |
| 2XL | 119–130 cm | 107–119 cm | 117–125 cm |
| 3XL | 131–142 cm | 120–132 cm | 126–135 cm |
adidas describes Tall/Long sizes as intended for men over 189 cm tall and Short sizes for men up to 175 cm tall.
Women's Clothing – Shirts and Tops
| Size | DE | Bust | Waist | Hip |
|---|---|---|---|---|
| 2XS | 26–28 | 73–76 cm | 57–60 cm | 82–85 cm |
| XS | 30–32 | 77–82 cm | 61–66 cm | 86–91 cm |
| S | 34–36 | 83–88 cm | 67–72 cm | 92–97 cm |
| M | 38–40 | 89–94 cm | 73–78 cm | 98–103 cm |
| L | 42–44 | 95–101 cm | 79–85 cm | 104–110 cm |
| XL | 46–48 | 102–109 cm | 86–94 cm | 111–117 cm |
| 2XL | 50–52 | 110–118 cm | 95–104 cm | 118–125 cm |
Women's Clothing – Pants and Shorts
| Size | DE | Waist | Hip | Inseam |
|---|---|---|---|---|
| 2XS | 26–28 | 57–60 cm | 82–85 cm | 77.5 cm |
| XS | 30–32 | 61–66 cm | 86–91 cm | 78 cm |
| S | 34–36 | 67–72 cm | 92–97 cm | 78.5 cm |
| M | 38–40 | 73–78 cm | 98–103 cm | 79 cm |
| L | 42–44 | 79–85 cm | 104–110 cm | 79.5 cm |
| XL | 46–48 | 86–94 cm | 111–117 cm | 80 cm |
| 2XL | 50–52 | 95–104 cm | 118–125 cm | 80.5 cm |
adidas Tall sizes for women are designed for women over 179 cm tall, while Petite sizes are designed for women up to 165 cm tall.
Kids' Clothing
Babies and Toddlers
| Size / Age | Height | Chest | Waist | Hip | Inseam |
|---|---|---|---|---|---|
| 0 months / 56 | 51–56 cm | 38.5 cm | 38.5 cm | 37 cm | 19.1 cm |
| 0–3 months / 62 | 57–62 cm | 43 cm | 43 cm | 42 cm | 21.75 cm |
| 3–6 months / 68 | 63–68 cm | 45.5 cm | 45 cm | 45 cm | 24.25 cm |
| 6–9 months / 74 | 69–74 cm | 47 cm | 46.5 cm | 47.5 cm | 27 cm |
| 9–12 months / 80 | 75–80 cm | 49.5 cm | 49 cm | 50 cm | 31.12 cm |
| 12–18 months / 86 | 81–86 cm | 51 cm | 50 cm | 51.5 cm | 34.5 cm |
| 1–2 years / 92 | 87–92 cm | 52.5 cm | 50.5 cm | 53 cm | 38 cm |
| 2–3 years / 98 | 93–98 cm | 54.5 cm | 52.5 cm | 56 cm | 41 cm |
Children – approx. 3–7 years
| Size / Age | Height | Chest | Waist | Hip | Inseam |
|---|---|---|---|---|---|
| 3–4 years / 104 | 99–104 cm | 56 cm | 54.5 cm | 60 cm | 45.5 cm |
| 4–5 years / 110 | 105–110 cm | 58 cm | 55 cm | 62 cm | 49.5 cm |
| 5–6 years / 116 | 111–116 cm | 60.5 cm | 56 cm | 64 cm | 52 cm |
| 6–7 years / 122 | 117–122 cm | 63 cm | 57 cm | 66 cm | 56 cm |
Youth and Teens – approx. 7–16 years
| Size / Age | Height | Chest | Waist | Hip | Inseam |
|---|---|---|---|---|---|
| 7–8 years / 128 | 123–128 cm | 64 cm | 59 cm | 68 cm | 59.5 cm |
| 8–9 years / 134 | 129–134 cm | 67.5 cm | 61.5 cm | 71 cm | 62 cm |
| 9–10 years / 140 | 135–140 cm | 71 cm | 63.5 cm | 74.5 cm | 65 cm |
| 10–11 years / 146 | 141–146 cm | 74.5 cm | 66 cm | 77.5 cm | 68 cm |
| 11–12 years / 152 | 147–152 cm | 78 cm | 68 cm | 81 cm | 70.5 cm |
| 12–13 years / 158 | 153–158 cm | 82 cm | 70.5 cm | 85 cm | 73.5 cm |
| 13–14 years / 164 | 159–164 cm | 86 cm | 73 cm | 89 cm | 76.5 cm |
| 14–15 years / 170 | 165–170 cm | 89 cm | 74.5 cm | 91.5 cm | 79 cm |
| 15–16 years / 176 | 171–176 cm | 91.5 cm | 76.5 cm | 94 cm | 82 cm |
Sports Bras – Alpha Sizing
This chart maps bra band and cup size to the alpha size used by adidas.
| Bra size | A | B | C | D | DD | E | F | G |
|---|---|---|---|---|---|---|---|---|
| 30 / EU 65 | 2XS | XS | XS | XS | XS | S | S | M |
| 32 / EU 70 | XS | XS | S | S | S | M | M | M |
| 34 / EU 75 | S | S | S | M | M | M | L | L |
| 36 / EU 80 | M | M | M | L | L | L | L | XL |
| 38 / EU 85 | L | L | L | XL | XL | XL | XL | XL |
| 40 / EU 90 | XL | XL | XL | XL | 1X | 1X | 1X | 1X |
| 42 / EU 95 | 1X | 1X | 1X | 1X | 2X | 2X | 2X | 2X |
| 44 / EU 100 | 2X | 2X | 2X | 2X | 3X | 3X | 3X | 3X |
How to measure clothing
- Chest: measure horizontally around the widest part.
- Waist: measure horizontally around the narrowest part.
- Hip: measure horizontally around the widest part with feet together.
- Inseam: measure from the crotch to the floor.
- Height: measure from the top of the head to the floor while standing straight.
Note on caps and goalkeeper gloves: adidas uses adjustable one-size sizing for some caps. For goalkeeper gloves, youth and adult sizing are not equivalent even when the size number is the same. Always use the product-specific size information for these products.
Source: official adidas size guides and adidas fit guides, status 08/2026.