MATERIALS
Safety goggles
Large piece of cardboard
Pencil
Craft knife
Tape
Smartphone

STEP 1
Lay the safety goggles on the cardboard so that they’re facing forward. Trace around the shape, adding at least 2 inches (5 cm) in front.

STEP 2
Roll the goggles up so that they’re resting on an end. Trace around that side, adding extra space again.