Dear Customer, thank you for your questions regarding the Professional Weight Bracelet Pro Wrist Wraps Wrist Protector you purchased from Trendyol. The correct use of the bracelet is of great importance for both comfort and effectiveness. Below, we provide detailed information to your questions: Wristband Tightness: When wrapping the wristband around your wrist, care should be taken that the tightness is neither too loose nor too tight as to hinder blood circulation. The ideal tightness should support your wrist stably without restricting your mobility, providing comfortable wearing. You can adjust the bracelet to wrap around your wrist using the velcro strap or closure mechanism for a precise fit. If it is too loose, the wristband may move out of place, while if it is too tight, it may cause discomfort or circulation problems. If you feel any discomfort on your wrist during use, we recommend that you readjust the tightness. Rubber and Tension Inserted into the Thumb: The thumb loop is designed to keep the wristband stable and in the correct position. The rubber slip on thumb prevents the bracelet from slipping and offers comfort during use. The tire should fit with slight tension, not restricting your hand or finger movements. It is important that when moving, the rubber is not overstretching and not pressing on the thumb. If the rubber creates discomfort in your hand movements, you can make a more convenient adjustment by controlling the position or tightness of the bracelet. In order to use our product in the most efficient way, we recommend that you make sure to put your bracelet on a clean and dry wrist before each use. This ensures a better fit and longevity of the bracelet. Thank you for choosing our product and we wish you enjoyable and safe workouts! Regards,