Sea to Summit Foam Core Pillow Review

What’s in the box

A rectangular camping pillow with a core of up-cycled foam, a layer of synthetic fill on top and a soft 50D stretch-knit cover in grey. A pocket built into the pillow doubles as its closure, so it rolls up into itself with no stuff sack, and the base has the Pillow Lock patch to fix it to a Sea to Summit mat. It comes in three sizes: Regular, Large and Deluxe.

Quick Specs

Newer versionSea to Summit Foam Core Pillow (2026)Lighter, new colours, and the Deluxe is now called XL.Read the 2026 review →

Like a pillow from home

Comfort is what the Foam Core does best. The foam core keeps the same height all night, where an inflatable can lose air or shift under your head, and the fill layer and soft cover feel good against your skin, without the sticky feel of some covers on a warm night. The rectangular shape and up to 16 cm of height in the Deluxe support your neck properly, which side sleepers will notice most.

Three sizes to choose from

Of the three sizes we tried, the Deluxe impressed us most. At 56 × 36 cm it’s close to the pillow you have at home, and at 474 g on our scale it suits car camping, the rooftop tent and longer stays, where weight doesn’t matter and comfort does. The Regular weighed 219 g on our scale and packs to 27 × 10 cm, so it’s the one for a pack, with the Large in between at 300 g.

The weights are from our scale; the sizes are Sea to Summit’s.

Rolls into its own pocket

Packing is quick: roll the pillow up tightly into the pocket built into it and close the hook and loop, and it’s a neat bundle with no separate stuff sack to lose. It doesn’t pack as small as an inflatable, though: the Deluxe is 37 × 12 cm rolled up. On a Sea to Summit mat, Pillow Lock holds the pillow in place all night. The patches for the mat come with Sea to Summit mats, not with the pillow.

Made from leftover mat foam

The foam in the core is left over from making Sea to Summit’s self-inflating mats, which cuts waste and gives the pillow its soft, supportive body. The 50D stretch-knit cover is a step up from the usual camping fabric and feels durable enough for many seasons. It can’t go in the washing machine: close the valve, wash it gently by hand in warm water with a mild detergent and let it air dry.

How it compares with other foam pillows

We’ve reviewed four other foam pillows. The Mountain Designs Pillow is the lightest at 220 g, the Zempire Chill-Pill self-inflates and has a removable cover, and the two Hikemans, the Memory Foam Camping and the Memory Foam Pillow, are solid memory foam. The Foam Core is the biggest of the five and the most like a pillow from home, and the only one that locks to a mat.

	This oneFoam Core (Deluxe)	2-sidedHikeman Grey→	ShapedHikeman Yellow→	LightestMountain Designs→	HeavierZempire Chill-Pill→
Pillow Lock	Yes	No	No	No	No
Type	Foam core and fill	Memory foam	Memory foam	Self-inflating foam	Self-inflating foam
Size	56 × 36 × 16 cm	38 × 25 × 10 cm	43 × 22 × 12 cm	37 × 28 × 10 cm	38 × 28 × 10 cm
Packed size	37 × 12 cm	25 × 12.5 × 12.5 cm	21 × 14.5 cm	26 × 9 × 9 cm	28 × 13 cm
Weight	474 g	360 g	445 g	220 g	405 g
Price paid	$55	$85	$75	$20	$55
Our score	9.4	8.4	8.3	8.9	9.0

Which Sea to Summit pillow?

We’ve also tested three Sea to Summit Aeros pillows. All three are inflatable, with the same valve and Pillow Lock: the Aeros Premium has a brushed knit face over a synthetic fill, the Aeros Down a duck down top and the Aeros Ultralight is the lightest by far. The Foam Core is the only one made of foam, the closest to a pillow from home and the heaviest.

	This oneFoam Core (Deluxe)	DownAeros Down→	PlushAeros Premium→	LightestAeros Ultralight→
Type	Foam	Inflatable	Inflatable	Inflatable
Top	Foam core & fill	Duck down	Brushed knit, Synthetic fill	Stretch knit
Shape	Rectangular	Rectangular	Curved	Curved
Face fabric	50D knit	10D	50D knit	20D knit
Weight	474 g	91 g	114 g	60 g
Price paid	$55	$120	$75	$55
Our score	9.4	8.9	9.3	8.9

Conclusion: Sea to Summit Foam Core Pillow

The Sea to Summit Foam Core Pillow is for campers who put comfort first. The foam core and soft cover feel like a pillow from home and keep their height all night, it rolls up into its own pocket, and it locks to a Sea to Summit mat. It’s heavier and bulkier than an inflatable and hand wash only, but in the light Regular or the generous Deluxe, it’s worth it for the better sleep.