The first-class materials used on the SPORTMIXER 2in1 sports bottle and shaker and the feature-rich construction make the bottle the perfect companion for the right drinking regime before and during sports performance as well as for leisure. The patented surgical steel ball mixes protein cocktails quickly and easily with an energy drink. The issue of bottles and staying in the sun focuses on the presence of a chemical in plastics called Bisphenol A (BPA) . While many plastic bottles contain BPA, for example polycarbonate water bottles also contain this chemical, our sports bottle is BPA FREE . It is therefore safe and you can safely expose it to sunlight and unwanted and dangerous substances will not be released into your drink. - suitable for teas, hot and cold drinks - neoprene cover for better grip - the cover also protects against hot drinks - a special cap that does not flow