These travel containers are made from soft, rugged silicone that’s easy to squeeze and gets every last drop out. Available in small, medium, and large sizes that are air travel approved (TSA) and are food-safe (FDA). Additionally they also offer a bunch of new features that no other soft travel bottle in the world has. These tubes feature a new, larger opening making them both easier to fill and clean. The bases have been contoured to stand up for even easier filling. The new LoopLock adds further prevention from leaks & can be hung from a hook or clip it to a pack. There’s also a textured area on the collar where you can write in the contents with a permanent marker - the texturing helps the ink stay in place and prevents it from being rubbed off. Dishwasher safe (top rack only). Choose between the following options: Large (3.4 fl oz / 100ml) Medium (2.5 fl oz / 74ml) Small (1.7 fl oz / 53ml)  *made of high-purity, FDA food-safe silicone. Silicone is one of the safest and most inert materials in common commercial use (heck, baby bottle nipples are made from the stuff!). However, no material is completely impervious. While these tubes work great with thousands of different fluids, sometimes a fluid can react, affecting the silicone of a tube, altering the fluid, or both. This is due to reactivity with silicone itself and isn't limited to the specific silicone used in the construction of these tubes. Please note this line is designed for travel, not long-term storage. Some products may change state (dry out or become less viscous) if kept in a tube for months at a time.  *