Vango has combined the very best in down & synthetic insulation technologies for this 3 season Vango Fuse -6 Sleeping Bag making it an excellent lofting yet compact sleeping bag for all year round use The unique blend of 70 hydrophobic down & 30 4T insulation offers the very best in insulative properties of a down bag in a compact package resistant to wet conditions The Hydrophobic down uses premium 90/10 duck down that has been humanely collected that has a hydro barrier to keep drier four times longer than untreated down while offering the same excellent lofting properties & as for the use of the 4T insulation this is an innovative synthetic insulation that traps air into its patented channel structure to improve warmth to weight ratio The outer fabric used on the Fuse Sleeping Bag range is a lightweight & breathable mini-Ripstop material that is abrasion resistant & has a water resistant finish to repel moisture & to protect the down filling & the lining is also a mini ripstop nylon with a silky soft feel so it is durable yet lovely & comfortable next to the skin This sleeping bag has a close fitting omega shaping with 3D hood & insulted shoulder baffle & zip baffle all to minimise heat loss retain warmth inside the bag so you can get a great night s sleep This new hybrid type of sleeping bag which comes in its own roll top dry bag is an excellent choice if you need to keep your pack size small & your weight low yet get an incredibly well performing insulating & high performing technical bag for your next adventure