YETI Silo Half Gallon Insulated Straw Cap sells on Amazon. I think the price is very good. Please read some of the reviews and see people thought of the product.**If you’re not sure whether to buy, add to cart, and you can come back to it later!**

Grab-and-Go Hydration with Roadie Hard Cooler Insulation: Made from the same virtually indestructible materials as our Roadie Hard Coolersbecause your grab-and-go hydration deserves the same toughness as your gear PermaFrost Insulation: Engineered with the same cold-locking power as our Roadie Hard Coolers, keeping your water crisp and ice-cold through every workout, road trip, and long day in the sun