The Marker 4.5 Kid's Ski Bindings are designed for the lightest weight skiers on the mountain. Marker makes the 4.5 extremely easy to use -- easy to click in and out of -- as well as provide your junior skier with proper release. The Marker 4.5 is built to provide junior skiers with the most important aspects of a junior ski binding, safety and ease of use. This is the go-to ski binding for little shredders everywhere.