f(x)'s Krystal shows how to be comfortable in style for 'Puma'

f(x)'s Krystal posed without model Ahn Jae Hyun this time around in a sporty and sassy pictorial for sportswear brand 'Puma'!

SEE ALSO: Krystal and model Ahn Jae Hyun look like a cute campus couple for 'Puma'

Krystal made sneakers look sexy with her alluring eyes and paired her colorful 'DISC 2.0' sneakers with knee socks, training shorts, and graphic t-shirts to pull off a look that is comfortable to lounge around at home in yet stylish enough to go for a workout outside or at the gym.

Catch Krystal with her other-half Girls' Generation's Jessica on their own reality show OnStyle's 'Cover Girl' set to air in early May!