The Marine 450 First Aid Kit from ADVENTURE MEDICAL is ideal for 1-6 people in a coastal vessel who might be 6 hours away from professional care. The kit's TRU Zip technology keeps your first aid supplies, and anything else you add (there's room to spare), dustproof and waterproof--even if submerged for 30 minutes in up to 1 meter of water. In addition to wound/burn/blister care items, medications, fracture/sprain supplies, and an emergency blanket, this kit also includes expert advice in Marine Medicine: A Comprehensive Guide by Eric W. Weiss, MD and Michael Jacobs, MD--a detailed resource to help identify and treat over 200 injuries and illnesses specifically related to marine medicine. Coast Guard Approval #160.054/23/0