The portable rifle rest is a portable means for the safe, secure, and convenient storage of firearms during shooting activities such as hunting or target shooting. Food or beverage where fucoidan which is derived from a fucoidan-containing substance and where algins are reduced or eliminated, is contained therein. Reserving the transmission period includes transmitting a request-to-send frame to the multiple receiving stations, the RTS frame including a receiver address field comprising compressed addresses for the multiple receiving stations. Prior deposition of photoresist or other layers, and subsequent exposure and stripping of the photoresist and etching of the other layers may also be performed. Pulling of the fastener body through a flexible pull unit on the fastener body results in loosening of the shoe.