USA Wrestling Blender Bottle - The USA Wrestling 28 oz Classic Blender Bottle is integrated with the StayOpen™ flip cap, the adjustable carry loop lets you hold more when your hands are full and offers a convenient place to attach keys while at the gym. The Classic's screw-on lid and secure flip cap keep your gym bag and car seat dry. With a snug twist of the lid and the assuring ‘snap’ of the flip cap, you’re ready to roll. Volume is measured to cup brim. For aesthetic purposes, the measurement markings only go to 20 ounces. Made from only the highest-quality materials, BlenderBottle® brand shaker cups are—and always have been—BPA and Phthalate free.