Easily view your gear inside the Sea to Summit Ultra-Sil View Dry Sacks with its innovative TPU clear window. The TPU window is RF welded into the side panels of the dry pack to produce a bond as strong as the material itself. Ultra-Sil 30D siliconized and fully seam sealed shell with polyurethane coating provides exceptional strength and water-proofness while reinforced stitching on all stress points helps improved durability. Roll top closure seals easily and secure contents inside. Locate your gear easily without getting it wet in Sea to Summit Ultra-Sil View Dry Sacks.