This eco-friendly baby glass bottle is completely free from silicone, plastic, and other petrochemical substances. This single-pack bottle comes with a natural rubber sleeve that covers the full length of the bottle - available in several colour options! This easy-on/easy-off sleeve, protects hands from the heat of a freshly warmed bottle, as well as further protects the robust borosilicate bottle from drops. The first of its kind designed in Denmark, the one-piece design nipple is made entirely from our beloved 100% natural rubber, and seals onto the bottle neck perfectly tight, without any leaks. The teat is cherry-shaped and ribbed to feel like mom's breast, and an anti-colic valve is designed directly within the nipple. The shock and thermo-resistant borosilicate glass bottle is especially fantastic for formula milk, as the wider bottle neck makes for easier access for spooning in formula – keeping bottle time mess free! And to top it all off, the natural rubber cap has a vacuum-seal finish, so no need to worry about spills on the go either. HEVEA nipples and caps are 100% biodegradable, and so is their packaging - we use a FSC® certified box with Earth First® window, made from plants. All HEVEA products are Vegan certified, and HEVEA, itself, is B Corp certified – with a mission to leave greener fingerprints for future generations!