The TACX Shiva 500ml is the world's #1 bottle in professional cycling made from 100% recyclable BPA/F/S and PET(E) Free polyethylene. The Shiva™ water bottle is a timeless classic that features easy to squeeze plastic and fitted with a premium Shanti™ cap. The Shanti™ cap has a leak proof hygienic membrane system and ergonomic rubberized lockable turnstile spout to control the dosage of your drink with a single squeeze.