If you can get your hands on a Shappel FX50, it will be the end of your ultra lightweight quest. Put all your gear in the sled. When you want a windblock, sit down and pull up the back. Boom!

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I have the Helix 7 and love it. I’d been a diehard Vexilar fan for decades, but the Helix changed that. You won’t regret the purchase.