Product details:

The Saltyroll is a simple waterproof drybag with roll down closures on both sides. Use it with the Harness, strap it to a rack, or pair it with another carrying system. Features Reinforced daisy chain allows for a multitude of strap placements Slide the straps on the Harness through the loops to keep the bag centered Radio-frequency welded waterproof seam construction Dual roll down closures Dimensions Diameter 7 in 17.8 cm Max length L 24 in 61 cm Weight 6.5 oz 185 grams Volume Max 15L 925 cu in. Materials 210 denier nylon. Dual coat TPU.Reinforced daisy chain allows for a multitude of strap placements
Slide the straps on the Harness through the loops to keep the bag centered
RF welded waterproof seam construction
Dual roll down closures