Worn lightly for 2 seasons. Because of the room to grow design- these fit both 13c and 1. Take out insoles for it to be a 1. Kept my littles toes warm. Easy on/off with the velcro! From Burton’s site: “Pint-size Progression. Get your mini shredder started on the right foot with the kids' Burton Mini Grom Snowboard Boots that are super-soft and flexible. Sizing starts small, and oversize hook-and-loop straps make getting ready fast and easy.” “Small Sizes and Room to Grow Sizing starts at 7C, and our Room-To-Grow footbed lets you gain a full size to stay ahead of guaranteed growth spurts. Traction to Ride and Play The super-cushioned DynoLITE outsole improves balance, traction, and comfort whether they are riding or just playing in the snow. Warm Feet are Happy Feet Sealed lowers and plenty of insulation keeps small feet warm and everyone happy.”