1.500D waterproof guarantee: applied 500D PVC high-frequency welded seams material, 30L newly dry bag backpack has strong waterproof, dust proof and tear proof performing. Water drop design of outer pouch makes this dry bag novel and special. The dry backpack is double reinforced at all the major pressure points so that it's durable enough and wear-resistant. Would absolutely be your ideal choice for any water environment you may encounter!

2.Outer pocket & inner pocket: the waterproof backpack has an outer splash-proof pouch with a premium water-resistant zipper. The visible outer pouch of this waterproof dry backpack helps for keeping the separate outdoor necessities and other required items for your easy and quickly access. Inside the waterproof backpack dry bag is a zip-pocket for storage of those high-value items whilst fully protected within the bag.

3.Humanized design: the wide padded shoulder straps plus extra chest and waist straps is very adaptable and comfortable when you pack this waterproof bag backpack. Flexible side pocket designs for putting water bottle and umbrella. We set a reflective strip on this waterproof backpack, which is highly visible when light touches. And the lifesaving whistle plays an important role in case of emergencies. That means your safety is assured when outdoor hiking or climbing at night.

4.How to seal: align the strap on top of the backpack dry bag after stores your gear, roll it down 3-4 times and fasten each side buckle to the straps on the back of the backpack, tighten up these two straps for better water resistance. Then connect the top buckle and stretched the strap to protect your belongings from getting wet. Each bag is equipped with a wide sturdy hand-hold for your convenience, meet your different demands for handheld or shoulder carrying.

5.Versatile use: our dry sack backpack is suitable for a wide range of outdoor activities, no matter hiking, camping, climbing, biking, even water sports like floating, kayaking, swimming, rafting, boating, canoeing, fishing, surfing, rowing...all allowed!

Specification:

1.Color: gray, black

2.Material quality: 500D+PVC

3.Before rolls: 32x22x70cm/12.59x8.66x27.55inch

4.After 3 rolls: 32x22x50cm/12.59x8.66x19.68inch