Amazon offers Prime members the Klymit Static V Lightweight Sleeping Pad in Green, model no. 06SVGR01C, for $39 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $5.58.) That's the lowest total price we could find by $16, although we saw it in another color for $5 less two weeks ago. It features a V-chamber design that limits air movement and heat loss and includes a stuff sack and patch kit.