LOKSAK - OPKSAK Storage Bag, Re-Sealable and Odorless Protection from Water, Humidity, Sand and Snow CAMPING MUST - Food and hygiene items attract bears and critters, odor-proof your campsite with OPSAK. This outdoor essential can filled with boiling water to cook food, with soapy water for washing, and more. ODOR IN, ELEMENTS OUT - Odor stops here! Discreetly carry or remove waste, cigars, food, and more. OPSAK uses the same hermetic seal as aLOKSAK to keep odor from escaping. KEEP FOODS FRESH - Prevent air-sensitive foods from getting stale, keep them sealed and fresh, chips, crackers, coffee beans, and more. No more freezer burn on stored foods. 2 LEVEL SEAL - Patented 2-level seal and durable film stays sealed under pressure. To test, place an air-filled bag under water. A few bubbles are normal, but a steady stream indicates a malfunctioning seal. MULTIPURPOSE PROTECTION - This leak proof, airtight seal can protect medical supplies, store precious metals, tools, liquids, documents, and more.