ACR Electronics Bivy Stick vs Sawyer Squeeze SP131

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

Sawyer Squeeze SP131 is the lighter option — 15 g lighter than the ACR Electronics Bivy Stick (15% less weight). If grams matter to you, that is the one to beat.

Spec	ACR Electronics Bivy Stick	Sawyer Squeeze SP131
Weight	100 g · 0.100 kg · 0.22 lb	85 g · 0.085 kg · 0.19 lb
Brand	ACR Electronics	Sawyer
Category	Safety	Safety

ACR Electronics Bivy Stick

100 g

Compact two-way satellite communicator with SOS, GPS tracking and app-based messaging over the global Iridium network.

Check price Full details →

Sawyer Squeeze SP131

85 g

0.1-micron squeeze water filter removing 99.99999% of bacteria and 99.9999% of protozoa. Includes three BPA-free pouches.

Check price Full details →

ACR Electronics Bivy Stick vs Sawyer Squeeze SP131: which should you buy?

If saving weight is your priority, the Sawyer Squeeze SP131 wins — at 85 g it is 15 g (15%) lighter than the ACR Electronics Bivy Stick (100 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 safety page, or browse the full gear weight database.

More safety comparisons

ACR Electronics Bivy Stick vs Fox 40 Micro Whistle ACR Electronics Bivy Stick vs Acme Tornado 636 ACR Electronics Bivy Stick vs Black Diamond Oz Screwgate Carabiner ACR Electronics Bivy Stick vs Sawyer Squeeze Mini Water Filter ACR Electronics Bivy Stick vs Katadyn BeFree 1.0L ACR Electronics Bivy Stick vs Katadyn BeFree AC Water Filter