The no thrills Zipp SL-Speed carbon bottle cage does its job well, but it still is over priced.
If a bottle cage does its job well it becomes somewhat unremarkable and forgettable — in a good way, you understand.
And that’s exactly the case with the SL-Speed. With no foibles to fitting, or use, it holds a full 750ml bottle without difficulty or even noise, the bottle fit is snug but not too tight, and it does everything just as you’d want.
At under 20g it’s super-light, and without a bottle it’s nicely minimal so shouldn’t contribute to drag.
Other than the price, which is OTT, we’d say it was perfect, but then it should be.