The Snowclipper cover option actually consists of two covers and it is not a bag.  The first cover is a large Shurelast Polyester Cover with a full length zipper and mitten pulls.  It has a second reversible cover that we call a compression cover.  This covers the zipper and allows for bulky items like snowshoes, skiis, snowboards, etc to be carried between the main cover and the compression cover.  The compression cover also works similar to a compression stuff bag allowing you to compact your load and reduce the risk of rollover.

Both covers can be removed in seconds for the option of hauling firewood, etc.  If the features of a bag and its utility for carrying your load out of the pulk is important-  consider the Wilderness Engineering pulks from the Links page due to their built-in pulk bags.