Braza Au Natural Swim Shapers - Silicone Bra Inserts Silicone Imported Silicone bra inserts that adds shape, fullness and lift. Adds a full cup size while adding roundness and cleavage Looks and feels natural; a safe alternative to serious surgery Use with bras and swimwear Measurements: 4 1/4" width, 4 1/2" length & 1/2" thickness at thickest point