Featuring welded seams and waterproof Tpu polyester, the Pack-It Dry Packing Cube shields contents against daylong rain or an errant beverage container. It s equally good at isolating wet, messy gear: Sandy travel towels, snow-soaked gloves, and leak-prone bottles can travel inside to keep the rest of your stuff dry and clean.Heavy-duty lash points let you secure it to a backpack or duffel where it delivers waterproof protection in all soggy situations except fully underwater dunkings.