Boldfit - The Boldfit Mi Band 4 Strap Mi Band 3 Strap is a must-have essential for your Mi Smart Watch as it elevates your personal style, can be worn during all activities, from fitness workouts as a Mi Fit Band to parties as a Mi Band Strap. It comes in a super cool design and colour too. The Mi Band 4 Strap Mi Band 3 Strap from Boldfit is made to be extremely durable, and never loses its softness and lightweight make to ensure your skin remain irritation free. The Mi 4 Band Strap Mi 3 Band Strap has a hook and loop design to fit most wrists, men or women. Mi Smart Band 4 Mi Smart Band 3 is sweat-resistant and water-resistant too.