The Improved BedNet System (IBNS) was designed to fit securely onto a military cot with push-and-lock straps on all four corners. The IBNS can also be used in the field thanks to its strong, waterproof tub floor. Its instant deployment, waterproof floor, and four corner buckles make the IBNS an efficient, fast-access shelter to protect soldiers from insects while asleep or resting on a cot OR in the field. In addition, the IBNS is designed to be upgradable to our EBNS using a single pole and fly. This gives you protection from the elements in addition to the IBNS's unsurpassed protection from insects. Email me if you have further questions.