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Exped DeepSleep Mat 7.5 vs Therm-a-Rest Vesper 20 Sleeping Bag

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

Therm-a-Rest Vesper 20 Sleeping Bag is the lighter option — 470 g lighter than the Exped DeepSleep Mat 7.5 (46% less weight). If grams matter to you, that is the one to beat.
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Spec Exped DeepSleep Mat 7.5 Therm-a-Rest Vesper 20 Sleeping Bag
Weight 1,020 g · 1.020 kg · 2.25 lb 550 g · 0.550 kg · 1.21 lb
Brand Exped Therm-a-Rest
Category Sleep System Sleep System
Exped DeepSleep Mat 7.5
1,020 g

Self-inflating comfort pad with 7.5cm foam core.

Full details →
Therm-a-Rest Vesper 20 Sleeping Bag
550 g

900-fill hydrophobic goose down sleeping bag rated to 20°F/-6°C. Ultralight and highly compressible for three-season backpacking.

Full details →

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Exped DeepSleep Mat 7.5 vs Therm-a-Rest Vesper 20 Sleeping Bag: which should you buy?

If saving weight is your priority, the Therm-a-Rest Vesper 20 Sleeping Bag wins — at 550 g it is 470 g (46%) lighter than the Exped DeepSleep Mat 7.5 (1,020 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 sleep system page, or browse the full gear weight database.

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