Black Basic Swim Cup Inserts Size 12/36B

These wafer-thin smooth laminate foam swim cup inserts are designed to blend neatly into swimwear for a clean, comfortable finish. They’re a practical choice when you want light shaping and coverage for swimsuits, sportswear, activewear, or even evening wear projects. The black color makes them easy to coordinate with darker fabrics, and the smooth profile helps them sit discreetly inside garments.

Use them when sewing supportive pieces that need a little extra structure without bulk. They’re especially useful for home sewists making swim tops, athletic tops, or garments where a soft cup insert is preferred. The source notes that they are sun and chlorine resistant, making them a smart option for poolside and beachwear.

• Wafer-thin smooth laminate foam cup inserts
• Black color
• Sun and chlorine resistant
• Quantity of 1 equals one pair
• Size 12/36B measures 5 1/2" high and 5 3/4" wide
• Machine wash cold
• Tumble dry low
• Suggested uses: swimwear, sportswear, activewear, evening wear

These inserts are a simple add-on for sewing projects that need modest shaping and a smoother silhouette. They work well in handmade swimwear and activewear where comfort, durability, and a low-profile finish matter.