Use this chart to find your size conversion.

JP Size US UK EU CM LENGTH
10 6M 1 17 9.5
10.5 12M 2 18 10.5
11.5 18M 3 19 11.4
12.5 24M 4 20 12.1
11.5 4 3 19 11.4
12.5 5 4 20/21 12.1
13.5 6 5 22 13
14.5 7 6 23 14
15 8 7 24 14.6
16 9 8 25/26 15.6
17 10 9 27/28 16.5
18 11 10 29 17.1
18.5 12 11 30 18.1
19.5 13 12 31 19.1
20 BIG KID 1 13 32/33 19.7
21 BIG KID 2 1 34 20.6
22 BIG KID 3 2 35 21.6
22.5 BIG KID 4 3 36 22.2
23.5 BIG KID 5 4 37 23.2
25.5 BIG KID 7 6 39 24.8
Free returns

Still not sure what size to order? No problem. Returns are always hassle-free.

Still need help?

Chat with a KEEN Expert for fit recommendations and advice.

Live chat
0
Search Icon

Big Kids' UNEEK O2

¥ 5,940 ¥ 4,158

Please choose a size! Please choose an inseam!

Fun colors and free-moving construction make this shoe a must-have. The interlocking cords form to kids' feet, offering sneaker support and a sandal-like feel. It's comfy enough for a full day of play.

  • Cleansport NXT™ for natural odor control
  • Free moving cord junctions allow for upper to adjust to foot
  • Secure fit lace capture system

We know shoes get dirty! We recommend hand washing these with cold water and a mild soap. To remove excess dirt or spot clean, use a stiff brush or soft cloth. Do not machine wash. Allow to air dry away from heat.

Live Chat

Chat with a KEEN Expert for style advice and fit recommendations.

For free spirits and kids who love color.

  • Fun colors and free-moving construction make this shoe a must-have. The interlocking cords form to kids' feet, offering sneaker support and a sandal-like feel. It's comfy enough for a full day of play.
  • Metatomical Footbed Design
    This internal support mechanism is anatomically engineered to provide excellent arch support and cradle the natural contours of the foot.
  • Cleansport NXT™ for natural odor control
  • Free moving cord junctions allow for upper to adjust to foot
  • Secure fit lace capture system
Material
  • Lightweight EVA midsole
  • Fully enclosed heel with soft, quick-dry lining
  • Metatomical EVA footbed
Care

We know shoes get dirty! We recommend hand washing these with cold water and a mild soap. To remove excess dirt or spot clean, use a stiff brush or soft cloth. Do not machine wash. Allow to air dry away from heat.

  •  

JOIN THE FAMILY

Enter your email address below and get 10% off your first order. Plus, get free ground shipping on most orders! For first time newsletter subscribers only.

You're on the list! Your 10% off code should hit your inbox soon. Happy shopping!

To the top