If you are a side sleeper, you will want to check out one of the best sleeping bags on the market with a spoon shape design. The Nemo Disco 15 is a mummy bag with a low degrees F temperature rating. It also has pillow pockets and down insulation for a premium camping experience.\r\nWhy We Like It - Nemo Disco 15\r\nThis sleeping bag has so many cool features that are not typical of your traditional mummy sleep sack. It has thermo gills to keep you from getting too hot at night, extra elbow and knee room for side sleepers, and a durable water resistant footbox to reduce wall condensation inside the bag.\r\n\r\nPerformance\r\nThe Nemo Disco 15 is rated for 14 degrees Fahrenheit temperatures, making it great cold weather gear. Having a low-rated degree bag will keep you more than comfortable if you are on a long trek or run into cooler than anticipated temperatures on the trails. Its pillow pocket is a nice feature that allows a jacket or extra clothes to be stuffed into the sleeve opening for secure, elevated support through the night. It can also be used to keep tomorrow\u2019s clothes close to you so that you aren\u2019t putting on cold clothes in the morning. The Nemo also has a nylon ripstop shell for making the bag super water repellent. The wide blanket fold draft collar, as part of the mummy bag, will allow you to be in a windy environment, but not be affected by the cool air. REI stands behind their equipment, which is welcoming and is always available for questions on their website. Just provide an email address, and their customer service team will get back to you.\r\nDesign\r\nThe spoon shape design on the Nemo Disco 15 gives side sleeping campers extra room for elbow and knee movements. If you have ever used a traditional mummy sleeping bag and try to sleep on your side, you will understand how hard it is to get comfortable. The extra space built into the elbow and knee areas allows you to move from side to side without bunching up your bag. If you are worried that you will get too hot inside your sleeping bag moving about, it has gills open that allow air to escape, but not enter. So, hot air can leave, but the cold air will not penetrate your sleeping bags. The sleeping sack also has a suitable shoulder girth, for broad-shouldered men, and a durable water repellent or dwr footbox to prevent sleeping bag wall condensation. Having a sleep sack w dwr is important when you run into a rainstorm or if your gear gets wet as you are setting up. Having breathable materials prevents mold from forming before you can wash your Nemo equipment. The bag is insulated with premium 650 fill power down and has a fill weight of just under 1.5 pounds. It also comes with a compression sack, or stuff sack, for compact gear, making the overall packed size 9x12 inches.\r\nValue\r\nThe price on the Disco 15 doesn\u2019t change much, so whether you looked at it a few days ago or weeks ago, you can be certain that you are getting the best price that REI offers every time. While these sleep sacks are higher priced than many of the bags on the \u201cbest of\u201d list, it has a lot of great features. When comparing the Teton Sports Leef 0 Sleeping Bag is cheaper but weighs over 1.5 pounds more than the REI Nemo. The Western Mountaineering Summerlite Mummy 32F Sleeping Bag is lighter in weight, but has a higher lower limit rating, compared to the Nemo. Finally, the Winner Outfitters Mummy is one-tenth the price but doesn\u2019t have the low temp rating, gills, or dwr footbox. Overall, most people found the unique features make this bag a well-placed investment for an avid camper.\r\nNemo Disco 15 Wrap Up\r\nOne of the coolest features of this sleeping bag is the extra elbow and knee room for side sleepers. If you have ever camped out in a mummy bag and tried to roll over in the middle of the night, you will appreciate the ingenuity that went into this sleep sacks design. The dwr and thermo gills are also a nice feature making this product a standout among similarly priced sleeping bags.