The Woosatch (A) is similiar to the Wasatch except these units do not have internal magazine pouches . It does however allow storage space where the magazines used to be via an velcroed opening on top center of the main body .The Woosatch version A has the same Body size as the Wasatch . All other features remain the same . New feautures added : 1)The ability to remove the back panel and use cross-back shoulder straps . 2) The two belt system has been replaced with an one belt system . Constructed of 1000 Denier Cordura nylon , sewn with 135/138 bonded nylon threads . Constructed and made totally with products from in the USA . Has HSGI Lifetime Warranty