The U+2 design is the most commonly used big bag with 4 loops.
This type consists of 1 U-panel and 2 side panels; part of the U-panel in fact functions as the bottom of the big bag.
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.