Hyperlite Mountain Gear Splash Bivy
Ah the Bivy. The bikepackers favorite piece of kit. Love it or hate it but you can't deny that modern bivy sacks offer a great mix of weather protection, weight, and packability. At a scant 5.5oz this bivy is seriously light weight.
Shelter in its Simplest Form
The Hyperlite Mountain Gear Splash Bivy is designed for those who need the absolute lightest weight sleep kit with the smallest form factor. At just 5.5 ounces, this bivy sack adds weather protection and warmth to your sleep system without weighing you down. Whether you’re riding out a storm under a tarp or sleeping under the stars, the Splash Bivy is the minimalist’s solution for keeping your sleeping bag dry and free from condensation.
Priced at $249, it fits squarely into the premium ultralight gear category. You'll want to pair this with a tarp as well so consider that when looking at overall price. The good news is a lightweight tarp is a fairly inexpensive piece of kit to come by.
Unique Features of the Hyperlite Splash Bivy
Dyneema Composite Fabrics
The floor of the Splash Bivy is made from Dyneema, one of the strongest and lightest materials available. It’s fully waterproof and highly durable, giving you a reliable barrier between your sleeping bag and wet ground. Don't even think about a footprint with this one.
Breathable Upper
The upper half of this bivy is built with a DWR coated mesh to let air in, and out. This creates a much more comfortable environment inside the bivy. Condensation should not be an issue and thanks to the DWR coating you'll be protected from any drops coming down off a tarp or overhanging vegetation.
Roomy Design for a Bivy
At 82 inches long and 32 inches wide at the shoulders, the Splash Bivy provides a bit more interior space than most ultralight bivies. It’s big enough to accommodate a standard sleeping pad and a lofty bag, which keeps your setup practical instead of claustrophobic.
Ultralight and Packable
At just 5.5oz ounces, it disappears into your pack. When rolled, it packs down to about the size of a small water bottle, making it one of the most convenient emergency or regular-use shelters you can bring.
Who is Hyperlite Mountain Gear?
Hyperlite Mountain Gear is based in Biddeford, Maine, and has built its reputation around Dyneema-based ultralight packs, shelters, and accessories. Their philosophy is simple: cut the weight, cut the clutter, and carry only what’s essential. The Splash Bivy fits right into this ethos, giving backpackers, bikepackers, and minimalist adventurers a simple but reliable tool to enhance their sleep systems.
If you’re looking for a lightweight, weather-resistant bivy to pair with a tarp or use under the stars, the Hyperlite Mountain Gear Splash Bivy is a strong contender. It’s a no-frills piece of gear that delivers exactly what ultralight adventurers want: simplicity, protection, and peace of mind.
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