This attachment is included in the BAÏST Glove & Liner System. 

Includes:

• BAÏST Bond Wrist Leash: so you never lose a glove again on the chair.
• Delivered as a pair 

This attachment connects to the base of the glove so that when you remove your glove from your hand, perhaps on the chairlift, you cannot love the glove.  It is connected to your wrist.