If you have a sweet, loving fluffball that metamorphoses into a feral hellcat when confined to a small space, you've just found the perfect carrier!  You know the drill: you have to trick your cat into entering the tiniest room in the home, containing both you and the dreaded carrier.  Closing the door triggers a biochemical reaction deep in your fluffy sweetheart's brain and next thing you know, a terrifying physical transformation has taken place and you're trying to corral a puffed up ball of volcanic anger and tiny whirling knives into the soft-sided rectangular prison of hellcat's worst nightmares.  If you survive this heroic endeavor, you face another challenge: how to prevent imminent escape.  Keeping the carrier in one piece is an equally important goal, of course.  Hellcats laugh in the face of most soft-sided carriers: their flimsy mesh disintegrates at a steely glance, thin nylon or canvas sides melt like butter beneath razor claws, and weak zippers part like the Red Sea if hellcat even thinks of making a break for it.  But hellcat has met her match in the Sherpa Ultimate Bag!  The only devastation my hellcat has managed to wreak on her Sherpa is in the form of a shredded fleecy mat.  This hellcat owner recommends replacing it with something more substantial, or tossing a blanket over it.