Rapha, nice but a bit pricey?

I'm thinking of getting some nanoflex knee warners - are they pretty good and grippy? I have skinny legs and so some I've tried don't really stay where there supposed to be.

And what's this space age warmth / rain prevention material like? Does it work?

Heated gloves? Are those from Rapha?

Had my Nanoflex knee warmers on today with my 3/4 tights. Have to say performed perfectly. With Castelli stuff being long and slim, these fit more like leg warmers on my short legs so 2 products in 1! win!