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ADIDAS BELIEVE THAT 1 - CBLACK/CARBON/IRONMT
(Product No.: AD-KJ3147-A0QM)
BELIEVE THAT 1 Trainers
- Regular fit
- Laces
- Upper: Textile / Other Materials
- Lining And Inlay Sole: Textile
- Outsole: Other Materials
- COLD CEMENT construction
- Non-marking rubber outsole
The Believe That 1 trainers are designed for those who dare to dream big on the basketball court. With a focus on performance and ease of wear, these trainers are crafted to support your moves. The textile and synthetic upper provides a snug fit, while the lace closure allows you to adjust the lockdown to your liking. Dreamstrike technology offers a blend of soft and stable cushioning, giving you the confidence to make those game-changing plays. The breathable materials transport sweat vapour, helping you stay comfortable and focused on the game. In addition, the non-marking rubber sole is suitable for playing on indoor surfaces. adidas continues to push the boundaries of sports performance, and these trainers are a testament to our commitment to innovation and excellence. Play with confidence and let your skills shine on the court.
Find more products here
Material description
Textile Upper
| Brand | adidas |
| Material type | Textile Upper |
| Fit | Regular |
| Theme | Basketball |
| Product group | SHOES |
| Gender | Men & 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.