This calculator estimates how well the elastic in your panties will hold up over time. You'll provide details about the elastic type, how often you wear and wash the panties, and your washing method. The calculator then projects the percentage loss in elasticity over a specific period, showing you how quickly the 'snap' might fade.

The elastic waistband and leg openings are critical for a panty's fit and comfort. When the elastic degrades, panties can start to sag, roll, or dig in. This calculator helps you understand how your choices—from the panties you buy to how you wash them—impact the lifespan of the elastic. It encourages you to choose durable options and care for them properly to maintain a comfortable fit.

The result is a projected percentage of elasticity loss over time. A higher percentage indicates that the elastic is degrading and losing its recovery. You can use this information to predict when a pair of panties might need to be replaced. It can also show you the powerful impact of proper care; for example, air-drying can cut the rate of elasticity loss in half compared to machine drying.

• Always wash your panties in cool or cold water to protect the elastic.
• Use a mesh laundry bag to prevent the elastic from getting snagged or stretched in the washing machine.
• Avoid chlorine bleach, which can be very harsh on elastic.
• If you notice the elastic starting to fail, it's a good sign to retire that pair of panties.
• Investing in panties with high-quality elastic will pay off in a longer-lasting, more comfortable fit.