Elastic helps keep lingerie and swimwear securely in place, but its tension needs to match the construction of the garment. A waistband may look right on a mannequin yet slip down or dig into the body during wear. That is why the result should be evaluated during a fitting, including while moving.
What Determines Elastic Tension
The elasticity, width, composition, and structure of the elastic all matter, as do the ratio between the elastic length and the edge being finished, and the method used to attach it. The same elastic can perform differently in a panty waistband, bra straps, along the edge of a cup, or around a swimsuit opening.
If there is not enough tension, a waistband may slip down or an edge may pull away from the body. Excessive tension can cause the fabric to gather, create wrinkles, and lead to discomfort. These signs should be assessed together with the garment size and pattern shape, as the elastic itself is not always the only cause.
Lingerie: Support Without Excessive Pressure
In a bra, the band, cups, side panels, and straps work together. The band should fit securely and remain in place. Overtightening the straps will not correct a poorly fitting band.
For panties, the fit should be checked around the waist and leg openings. Tension is adjusted according to the shape of each area and does not necessarily need to be the same around the entire garment. The edges should not dig painfully into the body, and the garment should not shift when walking or squatting. Marks on the skin alone do not provide a complete assessment of fit — comfort and garment stability also need to be considered.
Swimwear: Secure Fit in Motion
Around leg openings and other edges, the elastic should maintain a secure fit while swimming and after the garment becomes wet. Insufficient tension can cause the edges to pull away from the body, while excessive tension may distort the garment and create uncomfortable pressure.
When selecting materials, the conditions of use should also be considered: swimming pools, seawater, repeated stretching, and garment care. Fabric and elastic may react differently to these conditions, so their performance together should be tested in the finished sample.
How the Result Is Tested
During a fitting, the garment is evaluated while bending, raising the arms, squatting, and walking. For swimwear, an additional check is carried out after the garment becomes wet. The elastic is then assessed for recovery after stretching and to determine whether the fit remains consistent after following the recommended care instructions.
If a waistband slips down or an edge digs into the body, both the elastic tension and the garment construction should be checked before bulk production begins. When reviewing a sample with Private Label Latvia, the areas where these issues occur can be assessed separately.
