About this item ✅ Amber Glass Jars That Block Harmful Light ✅ Electric Auto Pump easily extracts stale air from your jars ✅ Achieve Maximum Potency - After curing is complete, pull the oxygen out of your jars using the auto pump. This will store your harvest in a low oxygen environment, increasing potency. ✅ Minimizes Chances of Bud Rot - These lids create a vacuum seal inside your jar. It is very hard for contaminates to grow in a vacuum increasing potency because of a low oxygen environment & Increases your chances for success! ✅ Date Tracker - Keep track of batches with our date tracker embedded in every lid! No more needing to remember when that batch started. › See more product details