The selection was based on small size and lightness. Viluinen's final choice was not any summer bag. In this product, all these wishes came true. I also had a silk bag to add warmth and protect the bag.
Verified buyerSanna M.


The Hydrogen is a part of Marmot’s top line of sleeping bags. Top notch fabrics and fill down together with the mummy form enable fantastic warmth to weight ratio, and this can also be seen in the packing size.
This is a PFC-free product.