Big Agnes 3-in-1 Sleeping System Lost Ranger UL 16

Product detailed description

This is the summer version of the Big Agnes 3-in-1 Lost Ranger UL 0 sleeping system 

Everyone would like to have versatile gear that works in all conditions. But in most cases, such gear simply doesn’t work. The Big Agnes Lost Ranger UL 15 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 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 zipper is also great, offering more 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’s 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 850FP 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 225 grams of down and has a total weight of 706 grams in the regular size. Ultra-light rip-stop nylon is used for both the outer and inner materials, which naturally features a high-quality water-repellent DWR treatment free of fluorocarbons. 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 crowning touch of the entire system is 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 "four-season." With this combination, you no longer need to worry about even the coldest temperatures. 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 850FP and has an excellent total weight of 552 grams. Combining the outer and inner sleeping bags gives you 538 grams of down and a total weight of 1258 grams, which is still a very acceptable weight for what is essentially a four-season sleeping system that you can easily convert into a summer, ultralight version.

Compatibility with sleeping pads

The sleeping pad attachment system works with the vast majority of sleeping pads 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 -12 °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, packed dimensions 23 x 51 cm, total fill weight 538 g,
Long : suitable for people up to 198 cm, packed dimensions 23 x 51 cm, total fill weight 595 g.

Big Agnes is 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 UL 15:

• Total weight: 1260 g (Regular), 1390 g (Long).
• Outer sleeping bag: 706 g (Regular), inner sleeping bag 552 g (Regular).
• Outer sleeping bag: 769 g (Long), inner sleeping bag 618 g (Long).
• Outer sleeping bag fill weight: 255 g (Regular), 227 g (Long).
• Inner sleeping bag fill weight: 283 g (Regular), 510 g (Long).
• Duck down DownTek™ with 850FP fill power and a fluorocarbon-free water-repellent treatment.
• Outer and inner material: ultra-light rip-stop nylon with fluorocarbon-free DWR treatment.
• The outer sleeping bag features a 3/4-length two-way zipper.
• 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: 22 x 39 cm.
• Comes with a compression and storage bag.