The 1.5" Tulle of the Hijab Undercap Volumizer Bonnet adds a subtle roundness and fullness beneath the hijab. The tulle fabric comes in different designs including plain, lace, dotted, and will vary. The underscarf cap is sturdily made from non-slip fabric and serged for long-term durability, it features adjustable ties at the back to fit all head sizes perfectly. The complementary tulle spiral flower is securely sewn onto the bonnet for convenience. Crafted from a soft, cool blend of polyester and cotton, the bonnet prevents scarves and shawls from slipping and adds a practical, fashionable touch to any hijab.