... x 4.5 cmMaterial: cotton and othersLead time: 5--15 daysCustomized artwork and logoUse area: if you feel hot in summer, ... intensity gel, using water evaporation cooling principle; the collector under the effect of temperature and air slowly release, due to evaporation of ... natural expansion.2. Remove with dry towel fabric surface drying, cold can wear on pre department, head and wrist, etc.3. Usage ...