Ergonomic handle made of PP SEBS material and a steel pin to provide a high level of ergonomics Automatic valve which automatically adjusts the air pressure inside Internal O-ring made of neoprene PA66 makes the suitcase is totally waterproof Closing hooks extremely robust. The system for opening / closing in two phases in addition to ensuring a particular fluidity of movement, prevents the hooks to open in case of fall Reinforced corners that make it extremely shock-resistant Materials: made of a patented material given by a special compound based on polypropylene TTX01, glass fiber and rubber. It is also composed of PA66, SEBS, PA66GF30, ALU, Stainless Steel. Maximum protection with minimal weight. The TTX01 and the use of materials such as aluminum for the trolley versions, allow to obtain a final weight of HPRC cases up to 20% lighter than the competition. It has been a priority in the creation of suitcases HPRC find the lightness combined with maximum protection. In any case the development of the material TTX01 continues: the search for lightness is not at the expense of protection, it’s a key point for our company. Certification: Material TTX01 gives the cases the feature to withstand impacts, drops and pressures thanks to its high resistance associated elasticity. An HPRC case used to extreme temperatures (hot or cold) does not lose its own distinctive features. The temperature range is guaranteed - 40 ° C - (40 ° F) up to + 80 ° C (+176 ° F). All suitcases HPRC are watertight, resistant to dust, moisture, acids and sand. Withstand falls and impacts: a means of transport so as to unparalleled protection. The HPRC collection has been subjected to severe tests based on norms / national and international standards, such as for example the ATA 300, IP67, STANAG 4280, DS 81-41 FALL, IMPACT HANDLE, SEALED, UV SEAL OF MATERIAL COLOR.