The makeON 4 Pad female Launchpad integrate it into their project without headers. The 4 position through hole PCB 2.54mm, open (no headers). It attach to their component, microcontroller or other connections directly with or without their own headers.

Open through-hole design for easy soldering, sewing, or hard connection
Extra mounting points for versatile installation
Works great with Neopixels, hard soldering Grove cables for wearables, and other digital or analogue sensors with 4 pin outs
Accommodates low profile, flexible circuitry for tight spaces, wearables