How to Choose Sleeping Bags for Backpacking
NEMO Rhythm 25 Sleeping Bag - Long
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This roomy, long bag features a revolutionary Spoon Shape that strikes a balance between the performance you want on the trail and the comfort you want in camp.
Shop similar productsKey Details
Fill
Primaloft
Weight
3 lbs. 1 oz.
Compressed Volume
10.6 liters
Temperature Rating (F)
25 degrees (F)
- Spoon Shape is wide in the shoulders, tapers to the hips and then gently flares back out to allow room for the natural bend and shift of knees
- PrimaLoft® Synergy synthetic microfiber insulation works a lot like down: it minimizes bulkiness, packs down well and stays warm even when wet
- Synergy insulation is constructed of fine and ultrafine denier fibers for excellent warmth, softness and loft; fibers form tiny air pockets to trap body heat
- Underside of sleeping bag features 10% less insulation than the topside to cut down on weight (insulation underneath is often flattened, so less doesn't hinder performance)
- Footbox has a waterproof / breathable coating on the backside of the fabric and a durable water repellent finish on the exterior to protect from tent condensation
- Tuckable Blanket Fold™ insulated flap can be wrapped around neck to block drafts and add warmth
- Fully adjustable contoured hood includes a pillow pocket
- Closeout
Imported.
Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.
Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
View all NEMO Backpacking Sleeping BagsEach bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
| Best Use | Backpacking |
|---|---|
| Tested Lower Limit | 28 degrees (F) - EN |
| Tested Comfort | 38 degrees (F) - EN |
| Temperature Rating (F) | 25 degrees (F) |
| Temperature Rating (C) | -4 degrees (C) |
| Weight | 3 lbs. 1 oz. |
| Shell | Ripstop nylon |
| Insulation Type | Synthetic |
| Fill | Primaloft |
| Fill Weight | 28 ounces |
| Lining | Nylon tafetta |
| Sleeping Bag Shape | Semirectangular |
| Fits Up To (in.) | 78 inches |
| Shoulder Girth (in.) | 66 inches |
| Hip Girth (in.) | 60 inches |
| Stuff Sack Size | 10 x 15 inches |
| Stuff Sack Volume | 19.3 liters |
| Compressed Volume | 10.6 liters |
| Gender | Unisex |
