An ultralight tactical boot, the 10-40 Series is engineered to provide maximum comfort and support without the weight of standard duty boots. At the core of the new series is the PTOA(R) orthotic footbed; a proprietary, load-bearing removable insert that uniquely combines the benefits of shock absorbing foam with superior arch support. The 10-40 Series is the new benchmark for light, fast, engineered tactical boots. Molded TPU heel stabilizer Athletic-style "ghillly" lacing system Highly breathable mesh side panels Moisture wicking lining Specifications Height: 7" Upper: 100% textile with an abrasion-resistant TPU toe cap for added protection Midsole: Shock absorbing EVA Outsole: Dual density nitrile rubber that is non-marking, slip-resistant, and oil resistant Insole: PTOA(R) (Power Take Off) removable, load-bearing orthotic footbed