Feature:Faster synaptic response (brain function), enhanced muscle response (in both fast and slow twitch tissues).Increased stamina (better oxygen uptake and recovery), more flexibility (faster recovery) and vastly improved gravitational balance. The 3mm thick wristband is made from Surgical Grade Silicone that is extremely durable, featuring a 40 percent stretch feature for extra stretch over the hands.Material: SiliconSize: Length 20.5cmColors: As picGender: Women / MenType: Boost Energy Hologram Bracelets.Style: SportsOccasion: Anniversary, Engagement, Gift, PartyPackage Includes:1pcs Note: 1.Please allow 0.1-0.3cm differences due to manual measurement, thanks.2.Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is the same. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.