ADVENTURE MEDICAL KITS AMK Ultralight and Watertight .3 Medical Kit Yellow Blue The ultimate ultralight medical kit, the AMK Ultralight and Watertight .3 Medical Kit contains the first aid essentials you need for solo day trips where portable, waterproof gear is a must. Ideal for multi-sport athletes, supplies come in a reusable, waterproof dry bag. Whether you're whitewater kayaking, mountain biking, ultralight hiking, backcountry skiing, or all of the above, this first aid kit keeps you prepared without weighing you down.