The design is fitted with Contigo's patented AUTOSPOUT® technology which allows for convenient single-handed drinking. Push the AUTOSPOUT® button and the spout flips open. No biting on the spout is required. There's a special locking mechanism to keep users from accidentally pressing the AUTOSPOUT® button. A carabiner clip makes it easy to clip the bottle to your bag or belt. This water bottle is made of a durable and innovative plastic, TritanTM. Odorless, stainless and 100% BPA-free. To top it all off, this water bottle is dishwasher safe.  Features: ¯‚·  AUTOSPOUT® button operates flip-up drink spout with one touch Leak proof in closed position Spout shield covers spout keeping it clean and protected One-handed operation Will not stain or retain odors. Durable with high impact resistance Dishwasher safe