Burton Snowboard Boots Smalls BOA Size: 23.0 Purchased last year at Burton in Harajuku and used 3 times. They became too small very quickly, so I think they are in good condition. Equipped with the BOA system, allowing for easy on/off and a stable fit with just a dial operation. Lightweight and easy to handle, recommended for beginners to intermediate riders, as well as kids and women. Size: 17cm and up