Honey-Can-Do VAC-01378 Closet Vacuum Pack Combo, 5-Pack, 2 Medium / 3 Large. Set of 5 vacuum-seal bags for space-saving storage. Airtight and watertight seal protects against dirt, moisture, bugs, and odors. Durable construction for use year after year. Limited lifetime warranty. Two medium bags measure 17-3/4-inch x 22-1/2-inch; three large-sized bags measure 21-1/4-inch by 33-1/2-inch. To vacuum seal - pack your bedding, clothing, gear, or any items you want to store/protect, ensure items are completely dry before packing, fill pack only to fill line, seal tightly using white slider, prepare air valve by removing cap and opening with one full counter clockwise rotation, using household vacuum hold hose tightly against one way air valve, when all air has been removed close valve and replace valve cap. To roll seal - pack your bedding, clothing, gear, or any items you want to store/protect, ensure items are completely dry before packing, fill pack only to fill line, close 90% of zipper seal so only few inches are left open for air to escape, turn air valve clockwise until it is firmly closed, begin rolling from opposite end of zipper, from bottom to top and seal the pack once you have removed as much air as you can.