... prevent and isolate dust, particle, alcohol, blood, bacteria and virus invading.3. Cuffs:elastic4. Colour:white,blue,yellow5. Packing: 10pcs ... prevent and isolate dust, particle, alcohol, blood, bacteria and virus invading.3. Thumb loop wrists prevent sleeves from sliding up ... :prevent and isolate dust,particle,alcohol,blood,bacteria and virus invading2.Thumb loop wrists prevent sleeve from sliding up ...