I found this pretty cool tutorial from 2015 that should work for most brands of sleeping pads. It’s only 0.2 oz:
Topic
DIY Sleeping Pad Inflator
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- This topic has 2 replies, 3 voices, and was last updated 6 years, 6 months ago by .
He probably picked that up here. Threads going back to 2011 at least, lol.
<p style=”text-align: left;”>I made a simple adaptor to fit a S2S/Exped air bag to the Thermarest stick valve. 6 inch section of 1/2 inch hose tubing from a beer supply store, hardware store, etc. Take the sport cap from a .7 liter Smartwater bottle, tap out the blue mouthpiece, glue to end of tubing. The blue piece fits the S2S/Exped hole. The other end slips over the valve. 2 bucks worth of parts and you’re done!</p>
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