Sea to Summit Amplitude AmII - Ultra Dry Down Sleeping Bag - Long - Blue

Designed for those of us who love space, versatility and plush comfort, the Amplitude is ideal for outdoor adventures that return to the same camp site each evening, for car camping road trips, crag-hopping van life or hut-based expeditions.

Its spacious contoured rectangular shape, with an ultra-wide circumference, is ideal if you love freedom of movement and hate that tight sleeping bag feeling. And no matter which way the weather turns, the Amplitude can be modified to suit. Zip yourself in and pull the internal drawcords tight to combat the cold. When the temperature heats up, the multiple-zips allow you to poke your toes out if you need a little fresh air or separate the top from the bottom of the bag and use it as a standalone quilt.

Suggested use: Lightweight trekking, Hiking, Camping, 
Season ratings: Spring/Autumn/Winter

Vertical baffles over the chest section ensure the down insulation cannot migrate or shift to the outside of the bag during sleep, creating cold spots. A side block baffle construction maintains the 60/40 fill ratio, keeping more down on the top of the bag for maximum insulation.

The generous allocation of high quality 750+ Loft down ensures great insulation, while the oversized draft tubes prevents your body heat escaping. The panelled footbox and 3-dimensional hood make sure you’re not compressing the down when you’re trying to stay warm.

Designed to integrate with all Sea to Summit sleeping mats and to create the ultimate in sleep system comfort, the Amplitude utilises simple removable adjustable webbing loops to connect your mat to your bag.

Features:

• Spacious contoured rectangular shape

• Six #5 YKK zip sliders on three two-way zips for ultimate ventilation and climate control

• Multi-zip configuration converts bag to a standalone quilt for warmer conditions

• RDS 750+ Loft ULTRA-DRY Down offers superior insulating power

• Vertical chest baffles prevent down migration and cold spots

• Oversized draft tubes prevent heat loss through zippers

• Generously sized hood and dual cord adjustment for maximum warmth retention

• Simple adjustable webbing loop system connects sleeping mat to bag

• 30D Nylon shell and 20D Nylon lining

• Large internal security pocket

• Includes lightweight Ultra-Sil compression bag for compact storage

• Zip Coupling: This bag is designed to pair with another

• Shell: 100% Nylon, Lining: 100% Nylon, Primary Filling Material: DUCK DOWN (Min. 90% Down), Stuffsack: 100% Nylon excluding Trims