Here's what other sites are saying:
SIM stands for Self Inflating Mat: traditional style mats with hollow air channels resulting in reduced weight and bulk. Comfortable, slip resistant, well priced and durable!
Created with vertical and horizontal air foam cores to reduce weight, Exped's self inflating SIM 2.5 Light mat supplies an R-value of 2.5 with CFK-free, high grade, open-cell PU foam. This durable mat is crafted with laminated polyester fabric with a brushed poly surface to prevent slipping.
- Mountain Gear
The standard in self-inflating mats, the Exped SIM Light 2.5 Sleeping Pad is a must have when you're out on the trail. Vertical and horizontal cores in the foam reduce weight making it easy to pack without sacraficing comfort. The short mat was constructed for the minimalist and children, but the standard length mat is still a viable option for those looking for superlight comfort. The top surface is laminated, brushed polyester fabric that provides excellent slip resistance, next to the skin comfort, and durability. A good sleeping pad is essential for anyone looking to enjoy a few nights outdoors and the Exped SIM Light 2.5 Sleeping Pad is the definition of quality, convenience, and value.
- Altrec Outdoors