Shipping type based on total weight of products is great if in your shop there are heavy items which need extra charge.
To enable this future have to:
1. Create custom data field named: shippingweight with Field type: number in EZG shop settings. If you have troubles of adding extra field just read this article:
2. After created shippingweight upload and update db
3. Now go to your products and fill some values for shippingweight. This value is number so you don't have to add unit (like kilogram, pounds and etc.)
4. Need to set some shipping settings: change SHIPPING TYPE to 'based on total weight' and add some SHIPPING OPTIONS in online shop settings panel.