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Most manufacturers target two weight points for an insulated ultralight jacket: around 8 to 12 oz for a lightweight jacket, and around 25+ oz for a belay-style parka. There are only a few jackets between those weights, such as the Patagonia Micro Puff Jacket at 16.5 oz with 2.7 oz/yd2 Polarguard Delta, and Wild Things hooded EP Jacket with Primaloft insulation.

OR jumps into the fray with the Zero, a 20-oz jacket .

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