Today I ordered an Operator 50° Ghost Pepper. 75" long x 50" wide. I chose the black 7D for inner and outer. My understanding is that it is the M7 fabric from RipstopbytheRoll, not the MTN 7D. It isn't clearly stated on the Operator Series product pages, but I'm going by this post from last year.
https://www.hammockforums.net/forum/...ghlight=fabric
MTN 7D is 0.74osy compared to 0.67osy for the Argon 67 material that is standard on the Operators. So it wouldn't make sense to pay the $20 premium per shell to add weight. M7 is 0.56osy.
I actually chose the 7D for the topquilt not for the concern of saving an ounce, but because I really like the hand of the M7 material compared to Argon 67. I think it will be an incredibly comfortable material for a summer topquilt where there is a lot of skin contact with the fabric. For the Operator Habanero, I went with the Argon 67, since there's no skin contact with the UQ.
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