Ultralight Emergency Bivy • Waterproof & Windproof • Compact Survival Shelter

Be prepared for the unexpected with the Rab Ark Bivi Double, a lightweight emergency bivy bag designed to provide fast, reliable protection for two people in outdoor environments. Built for hikers, climbers, and adventurers, this compact survival shelter reflects body heat and shields against wind and rain when conditions turn critical.

🏕️ Emergency Shelter for Two

Designed as a last-resort emergency bivy, the Ark Bivi Double offers enough space to shelter two people while helping retain core body heat in cold or exposed conditions.

• Fits 2 people comfortably inRidgerRaider bivu emergencies
• Ideal for mountain adventures, hiking, and alpine environments
• Essential safety item for any outdoor pack

🔥 Reflective Heat Retention Technology

The bivy’s interior is engineered to reflect body heat back toward the user, helping you stay warm when temperatures drop or in survival situations.

• Helps maintain core temperature
• Critical for emergency warmth and exposure protection
• Ideal for unexpected overnight situations

🌧️ Waterproof & Windproof Protection

Constructed from lightweight polyethylene (PE) with taped seams, this bivy provides reliable protection from the elements.

• Waterproof & windproof barrier
• Seam-taped construction for added durability
• Protects against rain, wind, and harsh weather

🎒 Ultralight & Ultra-Packable

Weighing just 200g (7 oz) and packing down to a compact size, the Ark Bivi Double is easy to carry on any adventure.

• Packed size: approx. 16 cm × 7 cm
• Includes compact stuff sack
• Takes up minimal space in your backpack

Perfect for ultralight hikers, climbers, and emergency kits.

🌄 Perfect For

The Rab Ark Bivi Double is ideal for:

✔ Hiking and backpacking
✔ Mountaineering and alpine expeditions
✔ Emergency and survival kits
✔ Trail running and ultralight setups
✔ Outdoor adventurers prioritizing safety

⚡ Why You’ll Love It

✔ Ultralight emergency shelter for two
✔ Reflects body heat to keep you warm
✔ Waterproof and windproof protection
✔ Packs down small for easy carry
✔ Essential safety gear for any outdoor trip

🔥 Stay prepared in the outdoors with the Rab Ark Bivi Double — a compact, ultralight emergency shelter designed to protect, warm, and keep you safe when it matters most.