Previous product
HELINOX Table One Hard Top L - Black With Blue Frame on Sale Original price was: $219.95.Current price is: $87.98.
Next product
SEA TO SUMMIT Treeline TI1 Sleeping Bag (2c) Fashion Original price was: $285.94.Current price is: $114.38.

SEA TO SUMMIT Amplitude AmIII Down Sleeping Bag (-15°C) – Double For Cheap

Original price was: $805.83.Current price is: $322.33.

SKU: US-6914221047964 Categories: ,


SEA TO SUMMIT Amplitude AmIII Down Sleeping Bag (-15°C) – Double

SEA TO SUMMIT | Amplitude AmIII Down Sleeping Bag (-15°C) DOUBLE

Comfort and versatility for long trips when shaving weight is not your highest priority.

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.

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.

Camping couples have not been forgotten—the four-season Amplitude AmIII is also available as a double for getting cosy under the covers with your favourite campsite companion. The mat attachment system on the double allows use of two single or one double mat and holds the mat secure under your Amplitude double bag.

  • Spacious contoured rectangular shape
  • Multi-zip configuration converts bag to a standalone quilt for warmer condition
  • Generously sized hood and dual cord adjustment for maximum warmth retention
  • Simple adjustable webbing loop system connects sleeping mat to bag
  • Large internal security pocket
  • Includes lightweight Ultra-Sil compression bag for compact storage
  • Zip Coupling: This bag is designed to pair with another




Recommended User Height
Packed dimensionsø20 x 46 CMø23 x 50 CMø20 x 46 CM
Weight1395 G2090 G1595 G
Fill Weight750 G1000 G860 G
Internal Chest Circumference194 CM326 CM208 CM
Internal Hip Circumference190 CM319 CM204 CM
Internal Foot Circumference142 CM282 CM172 CM

Designed to integrate with all our sleeping mats and to create the ultimate in sleep system comfort.

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.

  • 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
  • 30D Nylon shell and 20D Nylon lining
  • Six #5 YKK® zip sliders on three two-way zips for ultimate ventilation and climate control
  • Shell: 100% Nylon, Lining: 100% Nylon, Primary Filling Material: DUCK DOWN (Min. 90% Down), Stuffsack: 100% Nylon excluding Trims
Shipping & Delivery

We accept returns on non-sale items that are in original packaging, unused, and unwashed within 30 days of receipt. Please follow our returns/exchanges process below. If items do not meet our requirements for return, they will be shipped back to you in lieu of a refund. Shipping and handling charges are non-refundable (exceptions may apply).

Returns & Exchanges Process: If item(s) fit within our returns guidelines found in the Returns. Please allow 7-10 business days for the credit to appear on your account after your return is processed.