Hot or Cold use! Purchase the infuser and safely use it without infuser for natural pure water flavor. BPA and Lead free Borocilicate Glass and Stainless Steel drinking water highly enjoyable. The opening is large enough for small ice cubes to fit. Easy to Carry With handle on sleeve, weighing in slightly over 18 OZ with or without infuser, which makes it very easy cary and fir almost everywhere. Take it with you on the go and place inside of your cup holder, backpack or bike rack. Nylone Sleeve: It wil assist with soaking up any sweat that may come onto your bottle. If you are using for hot tea or coffee, it will protect you hand from the heat. Use Caution when dealing with hot liquids.