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An easy-to-pull-on design and grippy outsole make the Flex Runner a fan favourite. Made with playgrounds, break time and spontaneous games of chase in mind, this iteration has the stretchy bootie kids love with leather overlays for durability. A flexible outsole helps provide multi-surface traction, so kids are always ready to play.
Slip into fun
A stretchy bootie design provides a snug fit while ensuring the Flex Runner 3 is easy to slip on and off.
Made to play
Leather overlays work with a heel strap and reinforced toe tip to provide support and durability where kids need it most.
Made to move
Foam wraps around the heel to help provide stability when kids quickly shift directions. To keep the foam outsole flexible, we added flex grooves throughout, helping every step feel natural. Multiple tread patterns help provide durable multi-surface traction.
More benefits
| US | EUR | UK | JPN (cm) |
|---|---|---|---|
| 7.5 | 40.5 | 6.5 | 25.5 |
| 8 | 41 | 7 | 26 |
| 8.5 | 42 | 7.5 | 26.5 |
| 9 | 42.5 | 8 | 27 |
| 9.5 | 43 | 8.5 | 27.5 |
| 10 | 44 | 9 | 28 |
| 10.5 | 44.5 | 9.5 | 28.5 |
| 11 | 45 | 10 | 29 |
| 11.5 | 45.5 | 10.5 | 29.5 |
| 12 | 46 | 11 | 30 |
| 13 | 47.5 | 12 | 31 |
| 14 | 48.5 | 13 | 32 |
| 15 | 49.5 | 14 | 33 |
| CM | US |
| 13.3 cm | 6C |
| 14.2 cm | 7C |
| 15 cm | 8C |
| 15.9 cm | 9C |
| 16.7 cm | 10C |
| 17.6 cm | 11C |
| 18.4 cm | 12C |
| 19.3 cm | 13C |
| 20.1 cm | 1Y |
| 20.8 cm | 2Y |
| 21.6 | 3y |
| US | EUR | UK | JPN (cm) |
| 5 | 35.5 | 2.5 | 22 |
| 5.5 | 36 | 3 | 22.5 |
| 6 | 36.5 | 3.5 | 23 |
| 6.5 | 37.5 | 4 | 23.5 |
| 7 | 38 | 4.5 | 24 |
| 7.5 | 38.5 | 5 | 24.5 |
| 8 | 39 | 5.5 | 25 |
| 8.5 | 40 | 6 | 25.5 |
| 9 | 40.5 | 6.5 | 26 |
| 9.5 | 41 | 7 | 26.5 |
| 10 | 42 | 7.5 | 27 |
| Size | CHEST (cm) | WAIST (cm) | HIP (cm) | Height (cm) |
|---|---|---|---|---|
| XS | 80 โ 88โณ | 65 โ 73โณ | 80 โ 88โณ | 170 โ 183 |
| S | 88 โ 96โณ | 73 โ 81โณ | 88 โ 96โณ | 170 โ 183 |
| M | 37 โ 40โณ | 81 - 89โณ | 96 - 104โณ | 170 โ 183 |
| L | 40 โ 44โณ | 89 - 97โณ | 104 - 112โณ | 170 โ 183 |
| XL | 44 โ 48โณ | 97 - 109โณ | 112 - 120โณ | 170 โ 183 |
| 2XL | 48 โ 52โณ | 109 - 121โณ | 120 - 128โณ | 170 โ 183 |
| Size | BUST | WAIST | HIP |
|---|---|---|---|
| XXS | 70 - 76โณ | 54 - 60โณ | 78 - 84โณ |
| XS | 76 - 83โณ | 60 - 67โณ | 84 - 91โณ |
| S | 83 - 90โณ | 67 - 74โณ | 91 -98โณ |
| M | 90 - 97โณ | 74 โ 81โณ | 98 โ 105โณ |
| L | 97 โ 104โณ | 81 โ 88โณ | 105 โ 112โณ |
| XL | 104 โ 114โณ | 88 โ 98โณ | 112 โ 120โณ |
| 2XL | 114 โ 124โณ | 98 โ 108โณ | 120 โ 128โณ |
| Size | Numeric Size | Age | Height (cm) | Chest (cm) | Waist (cm) | Hip (cm) |
|---|---|---|---|---|---|---|
| XS | 6 - 7 | 7 - 8 | 122 - 128 | 64.5 - 66 | 59.5 - 61.5 | 68.5 - 71 |
| S | 8 - 9 | 8 - 10 | 128 - 137 | 66 - 69 | 61.5 - 65 | 71 - 74.5 |
| M | 10 - 12 | 10 - 12 | 137 - 147 | 69 - 75 | 65 - 69 | 74.5 - 79.5 |
| L | 14 - 16 | 12 - 13 | 147 - 158 | 75 - 81.5 | 69 - 72.5 | 79.5 - 84.5 |
| XL | 18 - 20 | 13 - 15 | 158 - 170 | 81.5 - 88.5 | 72.5 - 75.5 | 84.5 - 89.5 |
| XS | < 29 | < 35 | 32 | 34 | 30 |
|---|---|---|---|---|---|
| S | 29โ32 | 35โ37.5 | 32.25 | 34.25 | 30.25 |
| M | 32โ35 | 37.5โ41 | 32.5 | 34.5 | 30.5 |
| L | 35โ38 | 41โ44 | 32.75 | 34.75 | 30.75 |
| XL | 38โ43 | 44โ47 | 33 | 35 | 31 |
| XXL | 43โ47.5 | 47โ50.5 | 33.25 | 35.25 | 31.25 |
| XXXL | 47.5โ52.5 | 50.5โ53.5 | 33.5 | 35.5 | 31.5 |
| XS | 0โ2 | 23.5โ26 | 33โ35.5 | 31.2 | 33.25 | 29.25 |
|---|---|---|---|---|---|---|
| S | 4โ6 | 26โ29 | 35.5โ38.5 | 31.2 | 33.25 | 29.25 |
| M | 8โ10 | 29โ31.5 | 38.5โ41 | 31.5 | 33.5 | 29.5 |
| L | 12โ14 | 31.5โ34.5 | 41โ44 | 31.5 | 33.5 | 29.5 |
| XL | 16โ18 | 34.5โ38.5 | 44โ47 | 31.75 | 33.75 | 29.75 |
| XXL | 20โ22 | 38.5โ42.5 | 47โ50 | 31.75 | 33.75 | 29.75 |
| SIZE | 30 | 32 | 34 | 36 | 38 |
| A | XS | XS | S | M | L |
| B | |||||
| C | S | ||||
| D | M | L | XL | ||
| DD | |||||
| E |

