Friends deserve a cool double-walled stainless-steel water bottle like this. So, get them one! Kang Byeong Mok-style Line Friends "BT21" depictions of the BTS boy band are spotlighted in the wraparound art on this delightful Line Friends BTS BT21 16 oz. Metal Water Bottle. Can you find Jin, RM, Jungkook, J-Hope, Suga, V, and Jimin? Hand wash only. Not dishwasher safe. Do not microwave.