Featuring a lightweight design and durable structure the bottles are crafted for rugged and outdoor adventures. The bottles with cylindrical leak-proof design ensures no-spill even when turned upside down. The ergonomically designed 18/8 stainless steel bottle is easy-to-hold and fits most cup holders. It comes with locking ring to protect its content from any foreign particles â dust dirt or insects. The bottle features a copper coating inside and vacuum insulation which ensures your last sip as cold as your first one.