I live about 3 miles from Mid foot Cycling HQ and have met Nils a few times. I visited last week to collect some mid foot cleats for my MB shoes that I will be using for TCR this year. I had a look at the new TT24 pedals and had a chat with Nils about them, and potentially doing some aero testing. I will almost certainly try them out, and maybe use them for Challenge Roth.

I see 3 advantages. Firstly they are designed for mid foot cycling, secondly they are very aero, they fit flush with the shoe, finally, with a very low stack, you can set the saddle lower, potentially as much as 2cm lower compared with regular cleats in a forefoot position.

I think that the biggest aero benefit will be dropping the saddle

Not all shoes are compatible with the TT24 cleats so be sure to check, they have a compatibility list on website. Mine are not (Bont Tri shoes), so I went with the Patro Mid foot Adapters for speedplay and have my speedplay cleats moved back all the way now and I absolutely love it. More comfortable on hips, ankles, and calves while in aero position.