the Theorem combines durable waterproof construction with lightweight insulation for all-day comfort on the slopes

it doesn't need to be complicated

A game-changer for stability

The zip-in inner jacket

Smith 4D Mag XL Adult Goggles (M00783) 2027 Equipment Service the Theorem combines durable waterproofThe Smith 4D Mag XL takes the acclaimed 4D MAG platform and scales it up for riders who want maximum coverage and an expansive field of view. The oversized spherical lens and MAG magnetic interchange system work together to give you the widest vista on the mountain with the fastest lens swap capability available. ChromaPop optics make sure every detail of the terrain pops with clarity and contrast. XL oversized lens provides an expansive field of view