Official Gray [Nintendo Product] Joy-Con Strap,

"In addition to allowing you to enjoy gameplay by wearing the strap on your wrist, it also makes the Joy-Con easier to hold, resulting in more comfortable gameplay. It can be used with both the Joy-Con (L) and Joy-Con (R)." The Nintendo Switch console bundle includes two "Joy-Con Straps (Black)". The "Joy-Con Strap (Black)" included with the Nintendo Switch console bundle is not sold separately. If you are using this with a Nintendo Switch Lite, you will need to purchase Joy-Con controllers separately.