Designed for the reusable bottle market and fits most drink holders (not for waterbottle cages) BPA/phthalate/taste-free, stain resistant and incorporates a wide mouth opening for ice cubes and/or mixing (top-rack dishwasher safe) Compatible with most 63mm screw-top water filtration/purification systems Eddy Bottle drink cap design: flip-up/down (on/off) no-leak, medical-grade silicone BigBite valve with an internal, polyethylene (milk jug material) straw for easy access, and an integrated finger/carabiner-use handle (straw can be removed for tilt-up drinking)