FIRE FLY wobble balance board spike disc, help you perform side to side, front to back, stretch and circular drills.Wobble Balance Board helps improve core strength, posture, enhance coordination, sense of balance and visual sense. Great to strengthen the targeted muscles, ligaments, tendons and joints. With the lightweight and portable design, FIRE FLY Balance Board is great for balance exercises, home gyms, gyms, sports performance enhancement, rehabilitation, strength, and balance workouts. The ergonomic design of the Wobble Cushion provides lower back pain relief from sitting at your office chair or desk chair for long times. Place the wobble cushion between you and your office chair for lower back and lumbar support, or sit on top of the chair cushion for posture enhancement and flexible seating