Cord lock

Cord locks allow mountaineers to fasten clothing and camping equipment quickly in cold conditions when the fingers are encased in heavy gloves.

They consist generally of three parts: a barrel, a toggle (plunger), and a spring.

Released, the tension is engaged and the cord lock stays in place.

For example, cord locks are used in connection with garments that include drawstrings, such as hooded jackets and sweatshirts.

They vary in size depending on the particular application, from 1–3 inches (25–76 mm) long.