Sea to Summit don’t claim to have re-invented the self-inflating camp mat, they’ve just taken the basic self-inflating concept and added their own touch of expertise to create a reliable range of mats, and the Camp Mat SI is the durable all-rounder in the range.
A robust 75D polyester exterior protects a PU foam core that has Delta Core-V™ cut with variable core sizes that provide more warmth in the body contact areas and less where it is not needed to keep weight down.
Also featuring the Sea to Summit multi-functional, high flow rate valve for easy inflation, deflation and fine tuning of the mat pressure. This valve also enables the use of Sea to Summit’s Jetstream or Airstream pumps for easy inflation of your mat.
ASTM F3340-18 R-Value: 4.2
Pressure mapped foam core to optimise the balance between warmth and weight
A multi-functional high flow valve
Durable exterior
R-Value:
4.2 | ASTM F3340−18
External Dimensions:
183L x 51W cm
Packed Dimensions:
27L x 15W x 15H cm
Weight:
0.78 Kg
Mat Thickness:
3.8 cm
Material:
75D TPU Laminated Polyester
Fill Material:
Delta Core−V™ PU Foam
Pump:
Available separately
Suggested Use:
Hiking | Camping
Warranty:
Limited Lifetime
Supplier Code:
AMSICMR
Snowys Code:
15797
Reviews
(15)
4.515
Q&A's (16)
inflating 1 answer
Hello , I was wondering if it is worth buying a electric air pump, I hear that using My breath can introduce condensation ?
jim - Glebe, TAS (10 months ago)
G'day Jim,
You are correct that your breath can add moisture inside the mat. An alternative to an electric air pump is the Exped Widget Pump which is a handy little combo of pump, light and powerbank. They need a little coaxing to fit and it might be a good alternative for you.
Lee - Snowys(10 months ago)
Does this need a foam mat underneath?1 answer
Hi, is this comfortable enough to use as a sleeping mat on its own when camping, or would you recommend a foam underlay to carry with it as well? Cheers
Arun - Sydney, NSW(1 year ago)
G'day Arun,
In terms of comfort from an insulative perspective, it has a R-Value of 4.2 which is pretty good. If you've got a sleeping bag thats right for the conditions, you wouldnt have any issues staying warm. In terms of physical body comfort, it is only 3.8cm thick. In this instance, being a hiking style mat, you're sacrificing thickness for weight and pack size. Despite this it does have really great reviews and is surprisingly comfortable.
Anything thicker & you'll obviously have a heavier, bulkier mat. If you are wanting something thicker but still packs small and light, check out Sea to Summits Air Sprung Cell range.
Lauren - Snowys(1 year ago)
Self inflating vs inflatable1 answer
Hi, I'm trying to decide between this and the S2S Ultralight insulated mat. Is there much different? I'm a side sleeper and have heard some mats are quite noisy.
Mitchell - Toowong, QLD(2 years ago)
G'day Mitchell,
Yep, there is. The Camp Mat is 3.8cm thick, where as the Ultralight insulated is 5cm. Despite the extra thickness it packs alot smaller and weighs significantly less than the camp mat. Some mats can be noisy, but it seems to depend alot on the individual person & their own definition of 'noisy' - you might get two different opinions of the same mat, for example. It can also depend on your entire sleep system and the material on your sleeping bag. I personally haven't had any issues with the S2S inflatable mats, but something like sliding your mat inside a jersey liner or similar can help deaden any potential sound.
Lauren - Snowys(2 years ago)
sea to summit self inflating mats1 answer
it seems that the sea to summit self inflating mats are mostly out of stock. just wondering if (/when) they are likely to return to i know whether to wait or look for alternatives. Thank you!
kylie - Fitzroy North, VIC (2 years ago)
G'day Kylie,
We dont have an ETA sorry, currently we are waiting for further info from the supplier. ETA information is listed online, and will be updated if and when anything changes, so I can only recommend to check back every now and then. You can sign up for the notify me email, however this will only trigger when we physically receive new stock.
Lauren - Snowys(2 years ago)
Sizing1 answer
What’s the difference in size between regular and large?
Samantha - Altona, VIC(3 years ago)
G'day Samantha,
When you select the size in the drop-down menu, the in-use and packed dimensions will update.
The Regular is 183L x 51W cm, and the Large is 198L x 64W cm.
Leece - Snowys(3 years ago)
Can you please advise if this is a closed cell foam mat?1 answer
Thank you!
Heather - Lathlain, WA(4 years ago)
G'day Heather,
No, the Camp Mat SI Sleeping Mat is a self-inflating mat, so can't be classified as a closed-cell foam mat. We'd recommend checking out the Giga Earth Mat, or the Z-Lite Sleeping Mat if you're needing a closed cell mat for hiking.
Leece - Snowys(4 years ago)
Would like to know size of tapered end1 answer
Interested in buying to use in recently purchased Oztrail swift pitch bivvy,unsure if it would fit tapered shape of bivvy.
Craig - Wardell(4 years ago)
G'day Craig,
The tapered end of the mat measures approx 35cm across and 44cm up from the end it measures 44cms across.
Susie - Snowys(4 years ago)
Warranty1 answer
What does the Limited Lifetime warranty mean for this mat?
John - Perth(5 years ago)
G'day John,
Rather than recreating the wheel I'll get you to jump over to the Sea to Summit warranty page where they explain it in a little more detail
Leece - Snowys(5 years ago)
Suitable for kids?1 answer
Would this mat be comfortable for kids (aged 5 to 10), using the mat on the ground? And how does this compare to the EPE F60 in terms of comfort?
John - Perth(5 years ago)
G'day John,
The Camp Mat SI is a great option for kids to use. They are a little thinner than the F60, with the Camp Mat being 3.8cm and the F60 being 6cm thick. This also leads to a much smaller pack downsize. Overall we'd say the F60 is a little comfier based on the thickness so if you're not pace limited we'd say it might be a slightly better option for you.
Leece - Snowys(5 years ago)
Storage or stuff sack?1 answer
Does this mat come with a storage or stuff sack? If not, what would you recommend to store it in when on the trail
GR - Sydney (6 years ago)
G'day GR,
The SI Sleeping Mat comes packed in a nylon stuff sack with drawstring closure, similar to this one. If at any stage you're concerned about it getting wet, we also stock the Sea to Summit Dry Sack which can be used for extra protection should you ever need it :) Cheers
Alexandra - Snowys(6 years ago)
R-value/temperature 1 answer
Hi,
Is the sea to summit with R-value 4 suitable in warmer locations and summer use? Is it better to look at a mat with a different rating?
B - Malak(6 years ago)
G'day Malak,
You'll be fine using a mat with an R-value of 4 in summer. Have a read of our blog explaining R-values by clicking here. Hopefully, this helps clear up any questions you might have about what sort of mats might work best for the conditions you'll be camping in.
Tim - Snowys(6 years ago)
Packing size / AJ2019. 1 answer
I have a child going to AJ2019 & needs one to fit in bag with sleeping bag & all other items, will this one be suitable, will be taking a stretcher but will need a mat for one for night offsite.
Leanne - Queanbeyan (6 years ago)
G'day Leanne,
The packed dimension of these are 27x15x15cm so they're pretty compact. It'd be perfect for taking away on the Jamboree, you could even use it on top of the stretcher for extra comfort.
Tim - Snowys(6 years ago)
Comparison to EPE F601 answer
Would like to compare this mat (S2S SI Camp mat large) to the EPE F60, as the current listed prices are fairly similar. Which one would likely be more comfortable? Warmer? Durable (longer lasting)? Easier to pack away? Any chance on getting a photo of them packed back into their bags? Thanks.
Renee - Collie, WA(7 years ago)
G'day Renee,
Comfort can sometimes be a fairly subjective matter but I'll try my best for you! The Sea to Summit Camp Mat SI Sleeping Mat packs down a lot smaller and is easier to pack down. The F60 is about 2.2cm thicker and is about triple the weight of the Sea to Summit, which means it has more material packed into it. The F60 doesn't come with an R-Value whilst the Sea to Summit's R-Value of 4.0 is pretty decent. I'll pop a photo on here too to show the difference in packed size.
Ben - Snowys(7 years ago)
Repair kit?1 answer
Does this mat come with a repair kit?
Liz - Werribee(7 years ago)
G'day Liz,
The Sea to Summit Self Inflating Sleeping Mat range don't come with repair kits. The best option here is to have a tube of Seam Sealer available here handy to manage any possible leaks.
Ben - Snowys(7 years ago)
R-Value = temperature?1 answer
Thank you for the prompt response!!
I also looked at Exped SIM Lite 3.8 (#32185), they don't have R-Value but mentioned comfort temp rating -5C. What is the temp rating for R-Value 4 for this Sea to Summit mat?
Chetta - Melbourne(7 years ago)
G'day Chetta,
We offer the temperature rating as provided to us by Exped to assist with your decision making. The R-Value for the same mat is listed underneath the temperature rating as 3.2.
To expand on your question further, it's actually quite difficult to compare temperature ratings against R-Value ratings as they incorporate different qualities.
When factoring temperature, we recommend that you consider the complete sleep system. For example, someone in a zero-rated sleeping bag won't get all that insulation if they didn’t use a warm sleeping mat. Whereas, if a camper uses a warm sleeping mat but only a thin blanket they are of course going to lose a lot of warmth.
R-Value essentially refers to the resistance against heat loss and is a commonly accepted and tested rating amongst sleeping mat suppliers. The value then allows you to determine your mats capability in any climate. As a very rough guide... an R-Value of 2.5 is typically enough for most conditions in Australia outside of Winter. An R-Value of 5 is widely regarded as a winter mat, and combined with a complete sleep system of similar rating will be ample to take you to the snow.
Ben - Snowys(7 years ago)
Self Inflating Mat?1 answer
Under Details & Specs - Pump, it says 'Available Separately". What does this mean? Isn't it a self-inflating mat?
Chetta - Melbourne(7 years ago)
G'day Chetta,
Fantastic question. With all self-inflating sleeping mattresses, they are only able to inflate to a certain pressure as the foam inside allows, but the foam alone never expands to 100% capacity of the mattress. For many, the pressure of the foam expanding offers enough comfort, however, others prefer a firm mattress to sleep on. This is where the pump comes into play to inject further air to firm the mattress. An alternative to the pump is to just blow a few breaths of your own oxygen into the valve and this usually does the same job.