A grass whistle you can keep on your keys. This set includes four 3D-printed grass whistle keychains, each on a split key ring with a swivel lobster clasp.
It works like the classic thumb grass whistle, but you don't have to fumble with your thumbs to hold the blade.
How to use it:
Pick a broad blade of grass.
Thread it lengthwise between the two arms. A slot through the back lets long blades run out.
Squeeze the arms to pull the blade tight.
Hold it edge-on to your lips between your thumbs and fingers, and blow across the blade.
It can get loud. We measured it at over 103 dB. Do not blow it next to anyone's ear.
What you receive: four grass whistle keychains.
2 lime/yellow gradient with tan "GRASS WHISTLE" letters
2 tan with lime letters
"TOPOCO.ART" is printed on the back of each one.
Size: about 2.9 in (74 mm) long and 11 x 14 mm across. About 5 g each. Material: PLA, printed with 11 walls and 0.2 mm layers.
Made by TopoCo Art in St. Louis, Missouri. Ships in a small box. Grass is not included.
