On Sale. Free Shipping. Therm-A-Rest Dream Time Sleeping Pad The Dream Time Sleeping Pad by Therm-A-Rest is an ultra soft pillow-top mattress. The ultimate car-camping mattress or replacement bed in a camper. Specifications: Type: Camp and Comfort Series Trail Weight: Large: 6 lbs 13 oz (3090 g); Extra Large: 8 lbs (3630 g) Rolled Size: Large: 25 x 11 in (66 x 28 cm); Extra Large: 30 x 11 in (76 x 28 cm) R-Value: 8.0 Thickness: 3.0 in (8 cm) Features: Luxurious: Premium three-layer design includes removable mattress, cushy pillow top, and plush fleece cover. Convenient: Rolls up quickly with compression straps for easy storage. Easy Care: Removable fleece cover is machine-washable.