HOW DOES TERPLOC™ UV WORK? Our windowed pouches have added UV blocker to keep out harmful rays that break down your cannabis and diminish its quality. These are designed with a viewing window for displaying the variety of strains you may have on hand. Terploc™ UV pouches are engineered to withstand extreme levels of UV rays in order to preserve the highest levels of cannabinoids and terpenes. Put your product on display and be confident that it will stay in the shade.