Union Snowboard Binding Size Chart

Union bindings fit all major snowboard boot brands, models and sizes. Find your boot size in the row for your sizing system (US, UK, Euro or Mondo) and read the binding size at the top of that column. Use this as a guide and check the fit with your actual boots when you can.

Strap bindings – Men's / Unisex

Boot size	Small	Medium	Large	X-Large
US Men's	5.5 – 7.5	8 – 10	10.5 – 13	13 – 15
US Women's	6.5 – 8.5	9 – 11	—	—
US Kids	5.5K and up	—	—	—
UK	4.5 – 6.5	7 – 9	9.5 – 12	12 – 14
Euro	37 – 40.5	41 – 43	43.5 – 46	46 – 48
Mondo (cm)	23.5 – 25.5	26 – 28	28.5 – 31	31 – 33

Strap bindings – Women's

Boot size	Small	Medium	Large
US Women's	4 – 6.5	6.5 – 8.5	9 – 11
US Men's	5.5 and under	5.5 – 7.5	8 – 10
US Kids	3K – 5.5K	5.5K and up	—
UK	2 – 4.5	4.5 – 6.5	7 – 9
Euro	34 – 37	37 – 40.5	41 – 43
Mondo (cm)	21 – 23.5	23.5 – 25.5	26 – 28

Strap bindings – Kids

Boot size	One	Mini	Small	Medium
US Kids	7C – 11C	11C – 3K	3K – 5.5K	5.5K and up
US Women's	—	4 and under	4 – 6.5	6.5 – 8.5
US Men's	—	—	5.5 and under	5.5 – 7.5
UK	6 – 10	10K – 2	2 – 4.5	4.5 – 6.5
Euro	24 – 28	28 – 34	34 – 37	37 – 40.5
Mondo (cm)	13.5 – 17.5	17.5 – 21	21 – 23.5	23.5 – 25.5

Step On® bindings – Men's

Boot size	Small	Medium	Large	X-Large
US Men's	6 – 8	8.5 – 10.5	11 – 13	14 – 15
UK	5 – 7	7.5 – 9.5	10 – 12	13 – 14
Euro	38 – 41	41.5 – 43.5	44 – 46	47 – 48
Mondo (cm)	24 – 26	26.5 – 28.5	29 – 31	32 – 33

Step On® bindings – Women's

Boot size	Small	Medium	Large
US Women's	5 – 6	6.5 – 8.5	9 – 11
UK	3 – 4	4.5 – 6.5	7 – 9
Euro	35 – 36.5	37 – 40.5	41 – 43
Mondo (cm)	22 – 23	23.5 – 25.5	26 – 28

Step On® bindings work only with Step On® boots, and the wrong binding size for your boot can keep the system from locking in properly — double-check the size before you ride. Based on Union Binding Company's official size guide. Questions? Give us a call and we'll help you find the right fit.