1. Cov tshuaj muaj pes tsawg leeg yog inert silica, thiab tsis muaj kev txhawj xeeb txog kev cuam tshuam tshuaj lom neeg;
2. Round elastic hais. Impact resistant, tuaj yeem siv ntau zaus
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7. Cov txheej txheem ua haujlwm muaj cov nyhuv matt, tseem ceeb ntawm cov xim hlau, tsis xeb, thiab lwm yam, thiab tsis tas yuav tsum tau khaws thiab embroidered.
