








Lightweight and compact mattress -
The Sim Lite 3.8 Forest is a self-inflating mattress from the brand Exped, ideal for camping and three-season bivouac thanks to its R-Value of 3.4.
This mattress combines lightness and compactness with its 780 g weight and very small packed volume (Ø 16 x 26 cm), perfect for hikers concerned about bulk. Its surface of brushed recycled polyester 75D laminated with TPU offers a soft touch and good abrasion resistance, while the 14 kg/m³ PU foam insulation provides excellent protection against ground cold down to -5 °C. The honeycomb structure optimises comfort by distributing weight evenly.
Certified Oeko-Tex®, this mattress is designed with an eco-responsible approach using recycled materials, thus guaranteeing quality and environmental respect. Its rectangular shape and 3.8 cm thickness provide good support for restful nights in the great outdoors. An included storage bag facilitates transport and storage.


- Lightweight and compact
- Flat sleeping surface
- Soft touch
- Storage bag included
- Honeycomb structure
- Protects against cold from the ground down to -5°C
- Designed from recycled materials
- Oeko-Tex® certified materials
Composition:
- Outer material: Brushed recycled polyester 75D, TPU Polyether laminated
- Insulation: PU foam 14 kg/m³
Sizes:
| Size | M | LW |
| Dimensions | 183 x 50 cm | 197 x 65 cm |
| Folded dimensions | Ø 16 x 26 cm | Ø 17 x 33 cm |
| Weight | 780 g | 985 g |
| Oeko-Tex® | Oeko-Tex® is a testing, auditing and certification system aimed at environmentally friendly operations throughout the textile production chain. It covers all relevant operational areas (management, production technologies, resource usage, quality assurance, safety precautions, social conditions, etc.) in its sustainability review. To be certified compliant with the Oeko-Tex® standard, companies must meet defined criteria related to their environmentally responsible production processes and be socially acceptable at all stages of production. |