Sierra Designs Nitro Quilt 35°F Ultralight Sleeping Bag – 800 Fill DriDown, Backpacking Quilt

Meet the Sierra Designs Nitro Quilt: warmth, versatility, and ultralight ease

The Nitro Quilt blends blanket comfort with bag-like insulation for backcountry nights. It combines an integrated hood and full-length insulated hand pockets, so you can seal in warmth while keeping room to move. The result is a flexible sleep system that adapts from a toasty quilt to a compact camping companion, depending on your setup and needs.

Constructed with high-performance materials, the Nitro Quilt uses 800-fill power DriDown that is fluorocarbon-free, paired with durable 15d nylon ripstop fabric. This lightweight combination delivers impressive warmth without a heavy pack, and its fabric choice resists wear during rugged outdoor use. The oversized design adds coverage for chilly evenings, while the insulated hand pockets help block drafts and preserve warmth along the torso and arms.

Notable design touches include a hide-away hood that provides warmth to the head when temperatures dip, and an EN-rated performance standard that offers a tested benchmark for backcountry reliability. The insulation, shell, and liner fabrics work together to create a sleep experience that feels snug yet breathable, with a fill weight of 10.2 oz (289 g) and a total weight around 1 lb 6 oz (0.62 kg). This makes the Nitro Quilt a compelling choice for hikers and campers who value warmth without unnecessary bulk.

Key features at a glance

• 800 Fill Power DriDown with fluorocarbon-free treatment for lightweight warmth
• 15d nylon ripstop shell and lining for durability and compact packing
• Integrated hood and full-length insulated hand/arm pockets to seal drafts
• Oversized design for enhanced coverage and comfort
• EN Rating backed by tested performance data
• Fill Weight: 10.2 oz / 289 g; Minimum Weight: 1 lb 6 oz / .62 kg
• Fits up to 6'3" (190.5 cm); Length: 75" (191 cm); Circumferences: shoulder 56", hip 56", footbox 40"
• Includes mesh storage bag and stuff sack for organized packing

Real-world use and benefits

Use cases span a spectrum from quick overnight climbs to longer backpacking trips where weather can shift. The Nitro Quilt’s warmth can adapt to changing conditions, offering a roomy, quilt-like feel when you want to stretch out, or a snug, draft-blocking setup when the wind bites. The hood and pockets help you retain core warmth during late-evening sit-downs or early-morning starts, while the lightweight build keeps your pack efficient on long treks.

With an EN Rating and careful attention to insulation and fabric, this piece is designed to perform in cool nights without making empty promises. The Nitro Quilt is positioned as a flexible sleep solution for campers who value comfort, warmth, and the freedom to choose between blanket-like comfort and traditional bag-style protection.

How it fits into your kit

• Ideal for ultralight or fast-paced trips where every gram counts
• Pairs well with a sleeping pad and a light tent or shelter setup
• Easy to pack into a compact stuff sack for streamlined carry