Wasn't sure a training sleeve would actually make a difference, but the tight inner channel really does slow things down and build stamina. Cleaning takes a minute but it's worth it for the intensity.
Madison R.★★★★★
The texture inside caught me off guard the first time, way more stimulating than my old one. What sold me is the stamina angle, I've been lasting noticeably longer after a few weeks of regular use.
Evelyn Y.★★★★★
Didn't expect much from the "training" angle, but the tight inner texture actually makes you slow down and last longer instead of rushing. Cleanup is quick too, which I appreciate after longer sessions.