We've created a core of moldable material and surrounded it with soft foam to create a comfortable chest support that can be formed to follow your body contours. There are strap attachments on the Yokes for wheelchairs, travel chairs, and strollers. The lap belt has pivot mounts for optimal adjustability. Please see frequently asked questions, #19, for strapping options. If no option is chosen, standard strapping will be sent. Please Note: This product is not a restraint.