ThermoCore™ Cooling Inserts — 2 Pack

Healthy sperm production functions best when temperatures remain below core body temperature. Research has explored how elevated heat exposure may influence sperm parameters, including count and motility. A typical sauna session can temporarily raise temperatures in sensitive areas, which is why some men choose to take a more mindful approach to heat exposure.

Absolutely. Simply place the insert in the freezer before use, then reuse it again and again for future sessions.

Cooling duration varies based on sauna temperature, session length, and individual body heat, but most users experience cooling support throughout a typical sauna session roughly 25-30 minutes. For longer sessions, additional inserts can be rotated as needed.

100% cotton body with a cotton/spandex waistband for a secure, comfortable fit. Cotton is deliberately chosen over synthetics — it breathes naturally and stays cooler against the skin.Zero microplastics absorbed through your skin

Freeze the Thermocore cooling insert for 1-2 before use for optimal temperature.

Pack them in a small insulated lunch bag or cooler with an ice pack. They hold their temperature well for several hours when insulated.