Are Koozies reusable and washable.

Yes, they are,  We have had Koozies for 20 plus years with plenty of life in them.  Keeping our drinks as cold as day 1.

Regarding washing.  We recommend.

• Hand wash: Use a soft cloth or sponge and warm water with a gentle detergent to wash the koozie. Swirl and squeeze out the dirt, then rinse with warm water and let air dry.
• Washing machine: Treat the koozie as delicate and wash it on a gentle cycle with warm water and mild detergent. If the koozie is made of neoprene, use cold water. After washing, let the koozie air dry.