The Marmot Wave is a 3-season synthetic sleeping bag with a -7.5 deg C comfort limit when tested to EN13537 – and it does feel warm too, particularly around the chest. This is really noticeable as there is lots of extra insulation around the chest, while the hood and also the zip and shoulder baffles have plenty of fill in them. The Wave uses an overlapping shingle construction to prevent cold spots from developing at the seams, and this adds to the warm feeling of this bag, especially around the chest. It comes packed in a compression stuffsack. The bag is reasonably light, too. In use the excellent water repellency of the shell helps to keep the insulation dry. The zip has an excellent anti-snag design and the hood is very well-contoured and fits well. The drawcords are made of different cords so you can tell them apart in the dark and they are particularly well-designed to sit comfortably around the hood. In short, if you want a warm bag and need to save some cash then this is perfect for 3-season use, particularly if you like bags with chunky shoulder baffles and a warm chest area. But the Wave is heavier and not as small when compressed than other bags in its class. As with all bags these days the temperature ratings are confusing to understand.
Shell: Summit nylon with DWR finish
Inner: Summit nylon
Construction: Wave shingle
Insulation: Spiral fill
Packed size: 43x22cm; 36x22cm compressed
Weight: 1780g (bag only); 1902g with stuffsack
Made in China
Stores in UK: England 14; Wales 3; Scotland 1; Ireland 0
Verdict: Buy it if you want a well-priced, well-insulated 3-season bag with quality features as this is ideal, particularly if you like chunky shoulder baffles and a warm chest area.