The T-shirt offer of the day over at Teefury today is a “Spock On” tee, which shows Captain Kirk and Mr. Spock of classic Star Trek fame rockin’ out.

The limited edition blue t-shirt, available in both men’s (slate blue) and women’s (powder blue) sizes, sells for just $9 but will be sold today only [Saturday, February 6] “” after that, it’s gone forever (at the top right corner of the site, there’s a countdown to sell-out time).

Shipping is $2 for most residents of the U.S., but international shipping is also offered for additional costs.