Men's health underwear
Cool Beans
Introducing men's health underwear. The world's only cooling underwear designed to improve sperm health. Cool Beans Air Chilled Cotton cooling underwear works 4x harder to cool sperm. Learn more
Clinically referencedSoft certified waistbandRecommended by clinicians
- Secure checkout
- Same-day dispatch before 2pm
- 90-day returns on unworn items
90-day guaranteeMoney back if not satisfied
Expert supportSpeak to our specialists
01
Place a ruler behind your relaxed scrotum.
02
Align one edge of your scrotum — the widest part — to the edge of the ruler.
03
Your pouch size is where your scrotum ends on the ruler.
04
Refer to the table to find your Quokka, Koala or Wombat fit.
° Official Cool Beans measuring guide
Step 1 · Dial in your pouch size
7.0cm
Koala · Standard pouch
QUOKKAKOALAWOMBAT
5678910
Step 2 · Pick your waist size
Size M fits a 77–82 cm · 30–32 in waist.
° Your Cool Beans
Koala pouch · Waist M
Borderline? Cool Beans come up slightly smaller and tighter due to the elastic fabric, so consider sizing up — and opt for the larger pouch. We can't accept returns once underwear packaging is opened.