Ideal for newbies to the camping scene, the Mistral Si Mummy Sleeping Pad from Kelty is a budget-friendly, lightweight 1. 5in thick sleeping pad built to keep our bodies comfortable as we catch some Z's under the stars. This mummy-shaped pad is self-inflating, meaning it's quick to inflate and deflate with the easy-to-use valve, and is easy to pack back up into its stuff sack once it's time to take down camp.