These are ProTeam factory filters for the ProTeam GoFit 3 backpack vacuum. This is the Closed collar style of bag that ensures the user is not exposed to the contents of the full vacuum bag when changing.
Bag capacity is 3 quarts (3.3 Liters) and come 10 per pack.
These are disposable filters and not to be re-used. The factory recommendation is to change the filter bag when it reaches 3/4 full.
ProTeam replacement # 107667.