The 1.3 TightVac stores up to 100 grams (3 ounces) of dry herb, three times as much as the .57L TightVac. A vacuum-sealed cap lets no moisture or air into the TightVac, and lets gas build-up escape to preserve the tastes and scents of your dry herb. Choose from 3 styles. Clear is more casual, while Tint is stylish, and Solid is discreet. The travel-friendly TightVac herb container is made of durable plastic that lasts as long as 10 years. The TightVac will preserve dry herb for up to a year. For extra smelly substances, TightVac recommends using a strong ziploc bag inside the 1.3L TightVac container.