Outdoor Research Seam Sealer vs Sea to Summit Mat Repair Kit

Weight and specs compared for 2026 — and which one to choose.

Sea to Summit Mat Repair Kit is the lighter option — 10 g lighter than the Outdoor Research Seam Sealer (22% less weight). If grams matter to you, that is the one to beat.

Spec	Outdoor Research Seam Sealer	Sea to Summit Mat Repair Kit
Weight	45 g · 0.045 kg · 0.10 lb	35 g · 0.035 kg · 0.08 lb
Brand	Outdoor Research	Sea to Summit
Category	Repair Kit	Repair Kit

Outdoor Research Seam Sealer

45 g

Brush-on waterproof sealer for tent seams and jackets.

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Sea to Summit Mat Repair Kit

35 g

Self-adhesive patches for Ether Light and Air sleeping mats.

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Outdoor Research Seam Sealer vs Sea to Summit Mat Repair Kit: which should you buy?

If saving weight is your priority, the Sea to Summit Mat Repair Kit wins — at 35 g it is 10 g (22%) lighter than the Outdoor Research Seam Sealer (45 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.

See where both rank against everything else in this category on the lightest repair kit page, or browse the full gear weight database.

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