Waist height when the stomach takes up room
Short answer: If the waistband sits in the middle of the stomach, it rolls down during the day. A high style above the stomach or a low style below it sits better than one in between, and a wide, soft band also makes a noticeable difference.
Avoid the middle
The middle of the stomach moves the most when you sit, bend and walk. That is why the elastic gets pushed down right there. Choose a waistband that sits either above or below that point, so it has something firm to rest on and stays in place all day.
High style
A high waist lies flat over the stomach and rarely rolls, because the edge sits above the point where the body folds. Many find it calmer through the day. Read more about the styles in high waisted bamboo briefs.
Low style
A low style below the stomach works better for others. Here the edge rests on the hip bones, where it has something to hold on to. It depends on your body and what you are used to. Try both if you are unsure. See bamboo briefs.
Wide soft band
A wide band spreads pressure over a larger area and cuts in less than narrow elastic. It also leaves fewer marks on the skin. Bamboo viscose is soft and stretchy, so the band follows your body as you move instead of tightening and rolling.
For men
The same principle applies to boxers and briefs for men. A waistband sitting right where the stomach curves will roll or slide down. A style sitting a little higher or lower, with a wide band, stays put. See bamboo underwear for men.
Size
A size that is too small rolls whatever the waist height, because the elastic presses into the skin and looks for the lowest point. Choose by hip measurement at the widest point. If you are between sizes, the larger one is often best here. See the size guide.
Measure the rise
The rise is the distance from the crotch up to the waistband. It is not always in the chart, but product photos and descriptions give a good hint. If you have a pair that fits well, measure it and use that as a reference. More in waist height on briefs.
Washing and elastic
Elastic loosens over time, and a slack waistband rolls more easily. Wash at a low temperature, skip fabric softener and hang your underwear to dry. The tumble dryer is hardest on elastic. If a band starts rolling after many washes, it is often simply worn out.
The trousers on top
If the waistband of your trousers is tight, it pushes your underwear down whatever the style. A soft waistband on your trousers solves as much as the choice of briefs, because the two layers work together. Joggers with a wide elastic band are a good example. See bamboo sweatpants for women.
Frequently asked questions
Why does the waistband roll down?
Because it sits in the middle of the stomach, where there is most movement. The elastic gets pushed down as you sit and bend, and a size that is too small makes it worse.
Should I choose a high or low style?
It depends on your body. A high style lies above the stomach, a low one rests on the hip bones. Both usually sit better than a waistband in between.
Does a wider band help?
Yes, a wide, soft band spreads pressure and cuts in less than narrow elastic. It also rolls less often, because it has more surface to rest on.
You can find the full range at Bamboo-Clothing.com.
