BioGreen Biodegradable BPA-Free Sport Bottle with Wide Mouth DuoFlow Lid (26-Ounce, Metallic Silver, Plain) Wide mouth 26 oz sports bottle with leak Proof push pull DuoFlow 63 mm cap with soft rubber poppet Fits standard bike cage These bottles are biodegradable Soft squeezable LDPE plastic, recycle symbol #4, BPA free Made in the USA join the green revolution with BioGreen bottles They are made from LDPE plastic with a Bio-batch additive