The Big Agnes Q-Core SL air pads are the answer Big Agnes was looking for when they tried to make the quilted comfort of their fabulous Q-Core even more compact and superlight with the insulated Q-Core SL. This superlight and super compact air pad comes in various widths and lengths as well as rectangular and mummy shapes. This is their lightest and most comfortable air pad available, utilizing the same technology as the Q-Core with Alternating I-beam Construction and X-Static synthetic insulation. It has an estimated R-Value of 4.5. Nice and it’s comfortable too.Temp Range – 15°.Superlight version of the Insulated Q-Core pads.Light and compact three season pads at 3.5″/9cm thick for extra comfort.X-Static synthetic insulation with the natural performance of silver filament to enhance thermodynamic, anti-microbial and anti-odor properties.Alternating I-Beam construction creates a smoother, more comfortable feel.Add a closed cell foam pad in colder temperatures for extra insulation.Durable inflation valve.Includes stuff sack and repair kit. The repair kit is in a small pocket on the inside end of the stuff sack. It’s sort of hidden, so look twice..Each pad individually inflated and tested.Larger outsider air chambers keep you cradled in the middle of the pad.