• Weight (regular wide) 1160 grams
  • Size packed 20 cm x 46 cm
  • Recommended Maximum User Height 183 cm
  • Female Comfort Rating -1
  • Male Comfort Rating -8
  • Cost $499.00

Sea to Summit Trek II Sleeping Bag Regular Wide

Sleep Systems


Rating: 7.9 / 10
Weight 1.3 / 2
Value for Money 1.7 / 2
Durability 1.7 / 2
Warmth 1.6 / 2
Versatility 1.6 / 2

Sea to Summit Trek II Sleeping Bag Regular Wide Review

In choosing a new sleeping bag (or for that matter most other pieces of hiking equipment) there will always be a comprise between features, weight and price. Generally the more you pay, the more features you will gain and the more compact and lighter the sleeping bag. Your choice becomes how much do you want to pay. Recently I had the opportunity to test out the Sea to Summit Trek II sleeping bag in the regular size-wide fit and here’s what I learnt.

As a sleeping bag the Sea to Summit Trek II range sits at the lower end of what you would consider the quality range with the normal RRP sitting at AUD $499. By no means is this a cheap bag but its is at the cheaper end of the range. With that comes a bag that is heavier and bulkier coming in at 1160 grams and with a compressed size of 7.4 litres which is on the larger size of high quality bags – as someone who typically uses a 50 litre pack or less, this sleeping bag is larger than I prefer.

This bag has the basics as far as features go; 650 loft down, draft tube along the main zip, a hood and a toe box with a zip. Everything you need to keep you warm and cosy during the colder months. This bag is rated at -8° Celcius if you are a male which makes it a very versatile bag and will suit just about all your needs. However, if you are female then the bag is only rated to -1° Celcius so it is potentially limited depending on your requirements.

This bag also lacks the draft tube located near the neck region that more expensive bags have within the Sea to Summit range.

Size-wise the regular wide bag I tried is suitable for individuals who are up to a maximum height of around 183 cm. I’m approximately 185 cm tall and would have preferred the longer size that suits hikers of up to around 198 cm. Width-wise this wide version has a more relaxed fit and is designed for a heavier set hiker or just someone who wants a bit of extra room to move.

Colour-wise this bag series is a blue colour which is reasonably neutral for most people. This bags comes in the Trek I, Trek II, and Trek III along with longer and wider versions. The warmer the bag, the darker the colour.

Like many of the bags in the Sea to Summit range this sleeping bag is designed to be zipped together with another Sea to Summit bag creating a couples bag but as I’ve mentioned in other Sea to Summit reviews, I haven’t seen anyone do this in the past five years while out on the trail – or at least no one has told me. One other handy feature this bag has is the internal stash/security pocket which is handy for keeping batteries warm on those cold nights or keeping valuables safe.

Overall this is a good quality sleeping bag at the cheaper end of the mid range. While lacking many of the features and being heavier than the more expensive bags, if your budget is limited and you still want a quality bag then this one is well worth considering.

We Like

  • Wider fit that suits a heavier set build of hiker
  • Large internal security pocket to keep all your personal bits safe
  • Zip Coupling which allows you to pair with another sleeping bag so you can snuggle up to your special friend
  • 650+ Loft ULTRA-DRY Down™ provides excellent insulation and compressibility
  • Vertical chest baffles prevent down migration and cold spots
  • Soft touch 20D lining fabric is lightweight and highly breathable, durable 30D nylon shell
  • Oversized zip draft tube with anti-snag materials
  • 3D side-wall baffle maximises down insulation right to the edge of the bag
  • Separate foot box zip so you can vent excess heat from the base of the bag
  • Excellently priced good quality bag

We Don't Like

  • A bit on the heavier side and not as compact as I like

Best Uses

  • A great sleeping bag for hikers who aren’t looking for an ultralight or ultra compact bag or don’t want to spend big dollars

Buy One

You can purchase the Sea to Summit Trek II Regular Wide Sleeping Bag from Macpac, from Snowys, Wildfire Sports or from Wild Earth

Disclosure:  We may earn a small commission, at no additional expense to you, if you click through and make a purchase. Please note that our affiliations do not influence, in any way, the independence of our reviews. If we don’t like a product, you’ll hear about it from us!


AUD $499 RRP. Keep an eye out for the regular sales that occur and you may get a great deal

Other Versions

The Sea to Summit Trek II Sleeping Bag is available in :

  • Regular
  • Regular Wide and
  • Long version that suits people up to 198 cm. If you are taller than 183 cm then move up to the ‘long’ version of this bag

Sea to Summit Trek II – regular length-wide fit

Sea to Summit Trek II comparison of the different size options. The regular ‘wide’ size is unique and will defiantly have a niche for those hikers who are a bit bulkier or who prefer the extra space

Temperature ratings.  This bag is probably a bit on the cool side to be a year round all purpose bag for most females unless you are camping in warmer areas. For males however, this bag will suit most of your hiking needs unless they are extreme

Sea to Summit Trek II Regular Wide sleeping bag in storage bag

Sea to Summit Trek II Regular Wide sleeping bag in compression bag alongside a 1 litre bottle

Sea to Summit Trek II Regular Wide sleeping bag stash pocket

Sea to Summit Trek II Regular Wide Sleeping Bag – just the facts

Sea to Summit Trek II Regular Wide Sleeping Bag – long zip open

Sea to Summit Trek II Regular Wide Sleeping Bag – toe box zip

Sea to Summit Trek II Regular Wide Sleeping Bag – a cozy fit for Tim

Sea to Summit Trek II Regular Wide Sleeping Bag – hood drawn in

Sea to Summit Trek II joined with a Sea to Summit Journey Jo II sleeping bag (women’s bag)


This review was done with product provided by the distributor of Sea to Summit in Australia

Last updated

21 April 2024

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