Big Agnes Lost Ranger 15 3-in-1 Sleeping System

Product detailed description

Everyone would love to have versatile gear that works in all conditions. But in most cases, such gear simply doesn’t work. The Big Agnes Lost Ranger 15F sleeping system, however, is one of the few exceptions. Some time ago, the American manufacturer Big Agnes introduced interesting system sleeping bags featuring a pocket on the back for a sleeping pad. Now, however, the manufacturer is introducing a completely new system with a much more interesting design. It actually consists of two sleeping bags.

Outer down blanket

The foundation is an outer sleeping bag that resembles a quilt more than a standard sleeping bag. It is essentially a very spacious down blanket, but it features a simple system on the back that allows you to easily attach it to your sleeping pad. This ensures you won’t slide off the pad, as often happens with classic sleeping bags. This blanket has an enclosed foot area, which eliminates cold spots. The two-way zippers on both sides are also great, offering a wide range of ventilation options. This blanket is primarily intended for use on warmer nights. Since there is no filling on the back, your sleeping pad is the only source of insulation from the ground. It is therefore important to keep this in mind and, on colder nights, ideally choose sleeping pads with a higher R-value. It is clear that the manufacturer has thought of every detail. That’s why it also features a handy “sleeve” for attaching a pillow to the back system, which again significantly increases sleeping comfort.

Filling

The filling consists of certified DownTek™ duck down with a fill power of 650FP and a hydrophobic treatment free of harmful fluorocarbons. Thanks to this treatment, the down handles moisture much better, retains its loft, and dries faster. The outer down blanket is filled with 255 grams of down and has a total weight of 680 grams in the regular size. The outer and inner materials are made of 100% recycled polyester, which naturally features a high-quality, fluorocarbon-free water-repellent DWR finish. Every Big Agnes sleeping bag features a blue tag with a QR code that allows you to easily trace the origin of the down filling.

Inner sleeping bag

The system is complemented by an additional sleeping bag that opens up a wider range of uses. When you place it inside the outer down sleeping bag, you get a great set that truly deserves the label “three-season.” With this combination, you no longer need to worry about even light frosts. This sleeping bag is also equipped with a standard hood to prevent heat loss on colder nights. An interesting feature is the zipper’s placement in the center of the sleeping bag, which is especially beneficial for side sleepers. This zipper is 3/4 length and is, of course, a two-way zipper with an anti-snag design. The inner sleeping bag is filled with 283 grams of DownTek™ duck down with a fill power of 650FP and has an excellent total weight of 567 grams. Combining the outer and inner sleeping bags gives you 539 grams of down and a total weight of 1267 grams, which is still a very acceptable weight for a three-season sleeping system that you can easily convert into a summer, ultralight version.

Mat Compatibility

The mat attachment system works with the vast majority of mats that are 51–76 cm wide and 183–198 cm long.

Comfort

When it comes to temperature ratings, Big Agnes relies primarily on its own experience and that of its testers and ambassadors. For the combination of both sleeping bags, the lower limit temperature is listed as -9°C.  This corresponds to the standard ISO 23537-1 (male – 25 years old, 173 cm, 73 kg – 8 hours of sleep in a curled position without waking up). In our opinion, and based on a comparison with Criterion and Rab sleeping bags, we would say that the comfort level corresponds to approximately -5°C, but all such data must, of course, be taken with a grain of salt, as there are many factors that influence thermal comfort. The separate outer sleeping bag has a stated "comfort" rating of +10°C, and the inner sleeping bag +2°C.

Dimensions:

Regular : suitable for people up to 183 cm tall, packed dimensions 20 x 45 cm, total fill weight 539 g Long : suitable for people up to 198 cm tall, packed dimensions 20 x 45 cm, total fill weight 595 g

Big Agnes is now a cult American brand that was founded 20 years ago right in the heart of Colorado. Over that time, its approach, innovations, and quality have established it as one of the most successful outdoor brands. It has made a name for itself primarily thanks to its tents, which have long been the most popular choice for long-distance hikes like the PCT or CDT. So, this is by no means a newcomer to the market. The fact that Big Agnes is a reliable choice is evidenced by thousands of satisfied users around the world.

If you’re unsure about choosing the right sleeping bag, we’ve prepared a detailed guide for you – How to Choose a Sleeping Bag.

Big Agnes Lost Ranger 15F:

• Total weight: 1247 grams (Regular), 1389 grams (Long).
• Outer sleeping bag: 680 grams (Regular), inner sleeping bag: 567 grams (Regular).
• Outer sleeping bag fill weight: 255 grams (Regular), 283 grams (Long).
• Inner sleeping bag fill weight: 283 grams (Regular), 312 grams (Long).
• Down DownTek™ with 650FP fill power and a fluorocarbon-free water-repellent finish.
• Outer and inner material: 100% recycled polyester with fluorocarbon-free DWR treatment.
• The outer sleeping bag features two-way zippers running 3/4 of the length on both sides.
• Temperature ratings: outer sleeping bag (+10°C), inner sleeping bag +2°C, combination of both -9°C
• Regular length for people up to 183 cm, Long for people up to 198 cm.
• Compatible with sleeping pads measuring 51–76 cm x 183–198 cm.
• Packed dimensions: 20 x 45 cm.
• Comes with a compression and storage bag.