Assemble and install the thigh straps following the instructions in this video. Update 1: Use the strap lengths in the updated diagram below, not the lengths shown in the video. Update 2: if you find that your straps are sliding through the G-clips, iron a bit of scrap black 250 GSM (seam strip/tube) fabric to the strap where it passes through the G-clip.

Thigh straps are now included in all Atlin, Skeena, and Telkwa kits, and they’re also available to purchase separately in the shop.

If you don’t want to buy a kit, you can make your own thigh straps using the diagram below.

Thigh strap pattern. Note that the strap lengths are different in the video. Use these updated lengths if you have a kit with two 145 cm (57″) lengths of strap included.
Components of the thigh straps kit.