the kids boot with expandable sizing that goes as they grow. get your mini shredder started on the right foot with the super soft flexing burton grom boa® boot. with a quick turn of the dial, kids can dial in their boots without help from mom or dad, and open the door to a whole new world of mini-shred possibilities, while 3mâ„¢ thinsulateâ„¢ insulation keeps them out there longer. the super cushioned kids' dynolite outsole provides better balance, traction, and comfort when hiking, riding, or just playing outside. and save the best for last: with the room-to-growâ„¢ footbed you gain one full size to stay a step ahead of those guaranteed growth spurts. outer bootthe dynolite outsole provides superior cushioning, improved board feel, and consistent support in a 20% lighter weight construction. made entirely of an exclusive cushioning compound specially formulated to withstand repeated impacts and freezing temps for long-lasting shock absorption. with 3mâ„¢, burton found a progressive solution through a blend of 3mâ„¢ thinsulate™—an insulation constructed from unique, high-loft microfibers for increased warmth with less bulk. breathable, water-resistant and durable, it’s proving there’s substance to the cliche: less is more. all burton boot tongues feature an internal gusset construction to completely seal the lower zone of the boot, keeping feet warm and dry. linerthe burton mini grom has a liner-less construction. to keep up with kid’s constant growth spurts, the room-to-growâ„¢ footbed allows you to gain one full size. rather than buy new boots every season, simply remove the footbed when the fit becomes snug. a secondary, integrated footbed means there’s no compromise in cushioning or support. lacing systembuilt with a redesigned inner coiler spool to route the laces, the dial-it-in boa® system retains its quick, easy, and effective lace adjustment. natural fiber ropes equal a more natural flex and feel for greater all-day comfort. the single boa® quickly loosens or tightens with simple twists of the boa® dial.