Description
Your waterproof sleeping bag for hiking and bivouacs
The OPEX Toundra overbag is a waterproof protective gear designed to keep you dry during your mountain expeditions, bivouacs or hikes. This waterproof bag protects your mattress and sleeping bag from rain, moisture and wind, while remaining lightweight and compact for outdoor travel.
Technical specifications for your waterproof bag
Waterproofing and breathability for comfort
- Breathability: 3000 MVP (g/m²/24h) – allows evaporation of interior moisture
- Waterproofing: 5000mm – maximum protection against rain and water
This combination of breathability and waterproofing ensures that your overbag stays dry on the outside while wicking heat and moisture away from your body for optimum comfort in survival or bivouac.
Breathable 3-layer composition
- 1st layer: 96% polyester, 4% elastane – soft and durable
- 2nd layer: breathable polyester membrane – filters water while letting steam through
- 3rd layer: 100% polyester – extra protection and durability
This three-layer structure offers optimum breathability while ensuring waterproofing, essential for protecting your sleeping bag and survival gear in tough outdoor conditions.
Dimensions and overall dimensions
- Length: 210 cm
- Width: 70 cm
- Compact storage bag included – very low volume for portability
These adapted dimensions allow you to cover a standard mattress while keeping weight and bulk to a minimum for your hiking or bivouac expeditions.
Ideal use for your OPEX waterproof bag
This overbag is perfect for bivouacking in the mountains, hiking in damp or wet terrain, survival operations, or simply protecting your sleeping bag from the elements, rain and water infiltration from the ground or wind. Its zipper and openings facilitate access to your mattress while maintaining maximum waterproof protection.
Advantages of this waterproof sleeping bag
- Lightweight and compact – easy to carry when hiking or bivouacking
- Total waterproof protection against rain, moisture and wet ground
- Breathable – prevents internal condensation and maintains thermal warmth
- Compact storage bag included for easy transport and space-saving storage
- Reliable, durable survival gear for outdoor use in all conditions
















