If a double-sized sleeping bag - filled with R.D.S certified 750+ loft ultra-dry down - doesn't get a non-camper into the outdoors for a night under the stars...then there's probably no hope. The Amplitude Am3 from Sea to Summit has room for two and features multiple zips - providing ultimate sleeping versatility for couples.
Rectangular with an ultra-wide circumference, this bag provides plenty of wiggle room so you won’t feel restricted as you snooze. With a comfort rating of -8°, it's better suited for chillier conditions thanks to its easy zipper and drawcords mechanisms for a cosy night's sleep. In the warmer months, the multiple zips allow campers to exend their limbs beyond the sack, or use it as an open quilt.
To prevent cold spots, vertical baffles over the chest and side block baffles keep the down on top for ultimate insulation and warmth. Stash your phone or other valuables in the large internal security pocket, and connect to a sleeping mat thanks to the adjustable webbing loop system.
Be it kipping in your van, heading to your favourite camping spot, or staying in huts – the Amplitude Am3 Double Sleeping Bag from Sea to Summit will keep you warm and comfortable.
Ultra-wide double rectangular shape
Comfort rating -8°, lower limit -15°
Multiple zips allow for temperature adjustment or use as a quilt
Vertical baffles over the chest to prevent down migration and cold spots
Side block baffles for maximum insulation
High-quality R.D.S certified 750+ loft down fill
Panelled foot box and 3D hood prevents down from being compressed
Removable adjustable webbing loops to connect to a mat
30D nylon shell and 20D nylon lining
Can be zipped with a compatible sleeping bag
Snowys Comfort Rating:
Contoured Rectangular | Ultra−wide Circumference
Fill Ratio Top/Bottom:
Max. User Height:
326 cm Chest | 319 cm Hip | 282 cm Foot
205L x 160W cm
50L x 23W cm
20L | Compression Sack Size L
RDS 750+ Loft ULTRA−DRY Down™
Zip Draft Tube:
Dual #5 YKK | Six Zip Sliders on Three Two−Way Zips | Zip Coupling Compatible
Travel | Trekking
Zipper at foot1 answer
Does this bag have a zipper to open up at the foot end? Husband likes to stick his feet out!
Deborah - Blackburn South, VIC (1 month ago)
We do have this info online but it's buried a bit & easily missed! This sleeping bag has six zip sliders on three "Two−Way" zips, meaning one zip for each side and one for the foot end that can all be unzipped for either end. Hope that makes sense!
Lauren - Snowys(1 month ago)
Fitting to air mattress1 answer
Hi there, Seeing if this sleeping bag has any sleeves to be able to fit onto a double or queen air bed mattress, and if so- how thick of a mattress can it accommodate up to?
Chris - Coogee, NSW(12 months ago)
The Amplitude Am3 doesn't have a sleeve underneath it, but it does having some adjustable webbing straps that can be used to attach it to a mattress. They are designed to be attached to a lightweight hike style mat, so won't suit mattresses thicker than around 8cm, so, unfortunately, they won't be able to attach the bag to an air mattress.