The Kifaru pack rain cover features a single seamless silicone coated fabric sheet for complete waterproof protection. Bungie cord drawstring tightens securely around your pack. Available in three sizes covering 16L – 131L packs. All packs will ship with a small Ultralight Pullout Small pack cover: – Dimensions: 16? W x 26? L (stretches to 17.5? W – 23.5? L) – Covers: Up to 45L packs *image above is using a Shapecharge – Weight: 4oz – Ships with a small ultralight pullout Medium pack cover: – Dimensions: 26? W x 33? L (stretches to 34? W – 42? L) – Covers: Up to 72L packs – Weight: 4.2oz Large pack cover: – Dimensions: 30? W x 38? L (stretches to 43? W x 54? L) – Covers: Up to 131L packs – Weight: 5.6oz