Topeak Pannier Dry Bag Water Proof Bicycle Pannier Bag (1-Pair) Pannier DryBag features a fully seam sealed 300 denier and 600 denier polyester construction Compression straps stabilize the load Fully adjustable; will fit most racks Attaches with QuickClick quick-release one-touch QR 10.2 by 7.1 by 14.9 inches (L x W x H); capacity of 2563 cubic inches (per pair)