Montserrat with Roboto Slab in action on pete.so

.header-1 { font-family: Montserrat, sans-serif; font-size: 60px; font-style: normal; font-weight: bold; letter-spacing: -1px; line-height: 72px; text-transform: uppercase; color: #222222; }
.header-2 { font-family: 'Roboto Slab', serif; font-size: 26px; font-style: normal; font-weight: normal; letter-spacing: -0.8px; line-height: 35.1px; text-transform: none; color: #222222; }
.content-1 { font-family: 'Roboto Slab', serif; font-size: 20px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 32px; text-transform: none; color: #222222; }
.content-2 { font-family: 'Roboto Slab', serif; font-size: 20px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 32px; text-transform: none; color: #222222; }
Montserrat is available from Font Squirrel, Google Web Fonts and Typekit.

Roboto Slab is available from Font Squirrel, Google Web Fonts and Typekit.

Try this combination out in Pair and Compare.
Found by @mikesten on 10 Dec 2015.

Liked by:
@mikesten @AmaliaShacharr

Montserrat with Roboto Slab