Portable Tennis Trainer — durable base, rebound ball, and thick rubber cord for solo practice Key benefits Practice anywhere without a partner: provides consistent rebounds for solo drills and warmups. Builds handeye coordination, reaction time, concentration, and basic stroke mechanics. Stable and weatherready: fillable base plus nonslip bottom reduces tipping and wind issues for reliable training indoors or outside. What makes it stand out Durable construction: base made from density material for strength and long life. Longlasting ball: rebound ball covered in chemical wool fabric for good elasticity and strong wear resistance. Robust cord: thick, durable rubber cord designed to withstand repeated impacts. Thoughtful base design: fillable inlet/outlet lets you add water or sand to increase weight; nonslip bottom and windresistant form improve stability. Precision fit: spherical groove in the base holds the attached tennis ball securely for consistent rebound angles. Features and performance Materials: density base; chemical wool fabric rebound ball; thick rubber cord. Stability: fill base with water or sand and rely on the nonslip bottom to keep the unit steady during practice. Ease of use: tie the rubber rope to the trainer's ring and begin singleplayer drills right away. Portability: lightweight and easy to carry before filling, convenient for travel and outdoor use. Suitable for indoor and outdoor training. How to use Tie the rubber cord to the ring on the base. Fill the base with water or sand for added weight and stability (optional if you need a lightweight, portable setup). Strike the attached tennis ball to practice volleys, groundstrokes, returns, and reaction drills. Typical use scenarios Backyard or driveway practice: quick solo sessions to maintain stroke rhythm and timing. Indoor training in a garage or gym: controlled environment for technique and coordination drills. Court warmups or travel: lightweight to transport before filling so you can set up a warmup station anywhere. What you get Weighted base with fill inlet/outlet and nonslip bottom Chemical wool fabric rebound ball Thick, durable rubber cord attached to the ball This trainer is a simple, practical tool for improving basic tennis skills, coordination, and consistency without needing a partner.