
Hydrogel mouth tape is built around the material that sits against the lips. Texture, flexibility and skin feel matter because the strip may remain in place for hours during sleep.
Hydrogel is a soft gel-like material used as the skin-contact part of the tape. Shut It is designed to feel softer and more flexible than a rigid strip.

The product page lists purified water, vegetable glycerin, collagen, aloe vera, vitamin E and vitamin B5 among its skin-friendly support ingredients.

Shut It uses a 95% cotton and 5% spandex base. That gives the strip some flexibility so it can move with facial movement during sleep.

Mouth tape stays close to the lips for hours, so comfort and skin feel matter. A sleep accessory that feels distracting is less likely to become part of a consistent routine.

A softer tape does not make mouth taping appropriate for everyone. Nasal breathing must be comfortable, and people with relevant breathing conditions should follow professional advice.