300pcs/order. we don’t ship items to APO’s, FPO’s, AE’s exterior size: 9″ x 12″+1.5″ flap. interior size: 9″ x 12″ exterior size: 10″ x 13″+1.5″ flap . interior size: 10″ x 13″ exterior size: 12″ x 16″+1.5″ flap. interior size: 12″ x 16″ * white outer surface, black inner layer. * best quality self sealing mailers. * water proof. * tear resistant. * lightweight. * 100% recyclable. * No international shipping. * this item is made of pure plastic material,not recycled plastic material. * smooth surface,best quality. * don’t get stuck with the cheap ones!!!