From Austin Improv Wiki
Kevlar (full name: Kevlar: We're Bulletproof) is an improv duo.
 Press BlurbTheir press blurb, taken from a 2013 application to perform at The Hideout Theatre:
David Lampe and Kevin Miller have played improv together in various shows for over a decade. One day over a couple of Lone Stars, Lampe suggested to Kevin that they ditch all the other improvisers and go it alone. The result was Kevlar: We're Bulletproof, a two-man show with a rotating cast of characters and no other rules.
 "What's Your Deal?"Their answer to the "What's Your Deal?" question on a 2014 application to perform at The Hideout Theatre:
We do a two-man La Ronde. One of us begins a solo scene, then is joined onstage by the other, then the first person finds an excuse to leave and re-enters as a new character, and so on.