シリコンストラップ

The strap attaches so snugly to the back of the shades that I never worry about losing them on the trail, even when my son is scrambling over rocks. It's been through beach trips and playground tumbles without a single slip.

My kid thrashes his head around like a tiny tornado and these straps have never let the shades fly off once. The silicone grips the back of the frames so securely that I actually forget they're even there until I need them.

My kid is a professional hat-thrower, and this strap actually stays clipped on through every car seat wrestle and playground dive. It slides onto the arms cleanly and the silicone is grippy enough that I never have to re-tighten it mid-adventure. Worth it just for the peace of mind.