Gussets and Shaped Bases
Gussets and shaped bases give bags depth and help them fit bulky products. Compare expanded bottoms, box gussets and round bases to choose a shape that suits your contents.
Fast Facts
Purpose
Gussets and shaped bases give a bag depth, creating room for bulky contents.
Expanded bottoms
A bottom gusset adds a fold of fabric that opens as you fill the bag.
Box gussets
Stitching across the bottom corners creates a rectangular base and a more box-like shape.
Round bases
A circular fabric panel forms the bottom, giving the bag a rounded footprint.
Fabric choice
Firm fabrics hold the shape more clearly, while soft fabrics drape around the contents.
Product fit
Base dimensions determine how comfortably a product sits inside; the opening must also let it pass through.
Why choose it?
Choose a gusset or shaped base when a flat pouch fits awkwardly around your product. Extra depth gives boxes, jars and groups of items more room at the bottom. A rectangular base follows the shape of boxed goods, while a round base suits cylindrical products. Matching the base to the contents can create a neater fit without making the entire bag unnecessarily wide.
Things to consider
A shaped base does not guarantee that a bag will stand upright. Fabric stiffness, proportions and the contents all affect stability. Extra folds, seams or panels add production steps and can increase bulk. More space also does not mean a higher weight capacity: the fabric and stitching still need to support the load. Allow enough fabric above the product for the drawstring to close comfortably.
Customization options
Adjust the gusset depth, rectangular base dimensions or round base diameter to suit your product. A separate base panel can use matching fabric for a uniform look or contrasting fabric to highlight the shape. Check a sample with the actual contents, since flat measurements alone do not show the finished fit. We’ll need to confirm which construction and fabric combinations suit your bag.
Best suited for
Box gussets suit gift bags, shoe bags and storage pouches that hold bulky or rectangular items. Round bases suit bottle bags, candle packaging and cylindrical storage bags. Cotton canvas and firm woven fabrics give these shapes more definition; softer fabrics suit flexible packaging where the contents help form the bag.
Need this customization for your bags?
Tell us the bag type, quantity and requirements, and we’ll help you work out the right specification.
