Jobe Airstream 4 Person Ski TubeJobe Airstream 4 Person Ski Tube The Jobe Airstream 4P is a 4 person ski tube with a roomy deckpad and double stitched nylon construction. Eight handles with neoprene knuckle guards and two webbing handles run across the deck, so four riders have a secure grip from any seating position. A 24 gauge PVC bladder sits inside an 840 denier nylon cover the heavier denier cover on the larger Airstream models holds up to the extra loading from four riders.