*** Hit-Air has significantly larger neck bag to minimize backward head movement for the most critical body part. *** Customers complain about competitor’s vest being baggy since it hangs down farther. *** The Hit-Air vests are more comfortable because the rear hip air bags are concealed and drop down automatically in a deployment, making it unnecessary to have a long “duck tailed” style that can be uncomfortable in the saddle. Likewise, the neck bag and other air bags will deploy automatically; the H-Model model conceals the bags using Velcro closures and other models use snaps. *** One of our customers complained that the competitor was very uncomfortable during inflation because it inflated inward. The Hit-Air vests inflate outward; this is the reason you should not wear any constraining jacket over the vest. *** I believe Hit-Air is cooler and more comfortable to wear due to the open design. Notice the back and tail of both vests in particular. Hit-Air is so lightweight and VERY breathable as it is a harness rather than a full vest; it consists of tubes that expand when the vest inflates. *** Hit-Air was significantly less expensive when I had compared equivalent models. The competitor jacket vest (MSRP $675) priced closest to the Advantage (Hit-Air’s highest cost vest MSRP $615) is designed to be worn in conjunction with conventional BETA approved Level 3 body protector. *** The key box and CO2 cartridge are in a zippered compartment over the air bag, protected from dust and dirt and provides sound insulation to minimize spooking the horse during a deployment. *** Hit-Air is the original air vest designer having developed for motorcycles in late 90’s and adapted to equestrian in the early 2000’s. *** There are many optional Hit-Air accessories should you feel the need for added protection.