A lightweight design with an economical price that still offers the strength and protection of AiR Flex™ technology, including raised corrugations. Arch features 5mm vapor holes, maximizing ventilation and air flow next the body. Treated with AEGIS Anti-Microbial and a 3-point belt system. On all models of Mid Flex™ shoulder pads, youll also find the following features and benefits: 1) Ventilated arch and sub-arch, to increase air flow 2) No belts - all elastic strap attachment system 3) Raised corrugations with 5mm vent holes 4) Spacer fabric thats light and durable 5) Stainless Steel Hardware