The Ultimate Survival Technologies CORE™ Line of First Aid Kits 1.0, 2.0 and 3.0 are packed in ultra light, silicone-coated, water-resistant nylon pouches with Find-Me™ reflective backs to aid in Search & Rescue signaling. Contents internally packed in patented aLOKSAK™ resealable bags, providing 100% moisture barrier for especially wet days. Features a durable clip to secure the kit to your pack or equipment and an elastic strap to hold additional accessories. First Aid Kit .5 is packed in a water tight zip-seal bag. Each kit weighs under 13 ounces. The First Aid Kit Refill contains popular items most often used in your First Aid Kit. No need to re-purchase the entire first aid kit. This refill pack will do the trick. 28 Pieces.