Flexible fit: the trainer holds volleyballs of any size and features an adjustable belt and waist strap via the attached pouch, so you can get a secure, comfortable fit for different body types and training setups. Adjustable length: made from high-quality nylon and dipped (coated) materials for long-lasting use. The belt length is adjustable from approx. 211 cm to 350 cm to match your height and practice needs. Practice perfect spiking form: the device holds the ball in place so you can focus on your arm swing, contact point and follow-through without relying on a partner to set or toss the ball. Improve jump and power: use the trainer for repeated spike reps and jump drills to build vertical jump and timing. It supports both solo and group training sessions. Durable construction: robust materials and stitching withstand repeated use on courts, in camps and during team practices. Easy to use: quick to adjust and mount, making it simple to move between drills or training locations. Typical use scenarios Solo technical practice: attach the trainer and practice consistent arm mechanics and ball contact while the ball is held steady. Team drills and camps: set up multiple trainers for simultaneous spike practice, allowing teammates to work on timing and approach without constant setting. Beginner training and skill development: ideal for new players learning basic hitting technique and developing jumping ability with controlled, repeatable reps. What you get An adjustable volleyball spiking trainer compatible with all volleyball sizes Durable nylon and dipped/coated materials, adjustable from ~211 cm to 350 cm Adjustable belt and waist via the attached pouch for a secure fit This trainer provides a practical, durable way to increase repetition quality, refine spiking mechanics and build vertical jump—useful for individual practice, team sessions, training camps and beginner development.