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Fuel their need for speed in the Nike Sonic Fly. Designed for fast runners in the making, it pairs a lightweight design with soft, springy foam that helps add energy to every stride.
Responsive Cushioning
We packed the midsole with soft and springy foam that absorbs impact and adds energy to your kiddo's every stride.
Lightweight But Durable
Less weight means more speed. Mesh throughout the upper helps keep these shoes lightweight and breathable. We reinforced the toe and sides for added durability.
Support They Can Feel
Bands at the side of their feet work with the laces to add stability and a secure feel.
Rubber outsole with Waffle-inspired tread pattern helps provide durable traction.
Elastic laces and a hook-and-loop strap make these shoes easy to take on and off.
More Details
| 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 |

