This is the mask is designed a little differently from the usual loosely-filled bead ones.
In the bead pack, there is a seam partway from the top, and another over the nose bridge, basically packing the beads into compartments. I kind of like how this works. It ends up 'bottom-heavy' and I feel like that way it can direct heat where it needs to go a little better (sort of like how the skinny USB ones like Wizard do).
The bead pack slips into a soft, narrow slipcover with a velcro strap. Slipcovers are the most practical way to keep heat packs clean, though not everyone wants them (just depends how you like it to feel) - the alternative being disposable sheets, or a tissue.
The velcro strap is VERY long, which personally I found a little annoying, but for a larger hat size would definitely be a plus. For small heads, it might be more difficult to adjust it for a firm fit.
This one is the premium version of Ocusoft's mask. They also make a basic one with a thicker casing but without the separate slipcover (the strap is attached directly to the mask).
The OCuSOFT Dry Eye Mask is a moist-heat compress for symptoms associated with mild dry eye with a patent-pending cross hatch design proven to deliver even heat distribution. The mask utilizes Thermapod Heat Diffusing technology with silica beads to naturally attract moisture from the air and release it when microwaved. Heating the mask for 20 seconds will provide soothing moist-heat relief for dry, scratchy, irritated eyes.
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