Two of these - I find the Sea to Summit pads much nicer. The advantage of the cut-down ones over Thermarest's own short mats is that they have a square end instead of a pointy end. I have this theory that TR assume the short mats are for children... First one is shortened to 1050mm - torso length. Includes the stuff-sac. Silicone dots on the back. 210g on my scales, the stuffsac is an extra 13g Second one is a bit longer at 1250mm - knee length-ish. This one includes the stuff-sac and the repair kit. Silicone dots on the back. 260g on my scales. Stuffsac is an extra 13g. Neither mat leaks at all. £35 each including postage to the UK. This one is now sold.