Kid-friendly flex with BOA® Fit System adjustability Set your little shredder up for independence and a comfy ride. The kids' Burton Grom BOA® Snowboard Boots put kids in control with the BOA® Fit System and a mellow flex that lets them bend and move as they learn to control their board. Bunny hill or groomers, there's a wide world of mini-shred possibilities. Features: Our Room-to-Grow system expands the boots one full size without compromising on comfort or support.