Protac Ball Cushion

A sensory-stimulating seat cushion filled with air-less plastic balls designed to promote a dynamic sitting posture, reduce motor restlessness, and sharpen mental concentration. When a user moves, the internal balls roll easily, shifting the body's center of gravity and naturally prompting the user to straighten up and sit up straight. This constant micro-movement actively absorbs physical unrest while strengthening core abdominal, lower back, and postural muscles. It is heavily used in classrooms, institutions, and during meals for children and adults with ADHD, autism, sensory processing difficulties, and psychiatric disorders.

• Specifications:

  • Core Ball Size Variations:

    • 38 mm (1.4-inch) EVA Plastic Balls: Delivers maximum movement and the strongest sensory stimulation due to deeper dynamic touch-pressure. Highly recommended for severe physical unrest, ADHD, and diaper wearers (ensuring the pressure is felt through extra layers).

    • 25 mm (1.0-inch) EVA Plastic Balls: Delivers a milder, more general sensory stimulation with lower movement. Highly recommended for younger children, low-BMI/thin individuals, tactilely defensive users, or those with highly sensitive skin.

  • Chassis Configurations:

    • Standard Four-Legged Chair/Stool Model: Equipped with 4 integrated corner straps to secure the cushion firmly around the legs or frame of a standard chair.

    • Office Chair Model: Engineered specifically with a specialized base design to securely anchor to single-leg gas-lift office chairs.

    • High Chair Model: Customized layout configuration tailored to fit pediatric high chairs.

  • Dimensions:

    • Small Square / Stool: 11.8" × 11.8" (30 × 30 cm)

    • Kindergarten Chair: 11.8" × 13.7" (30 × 35 cm)

    • Large Stool / Standard Chair: 13.7" × 13.7" (35 × 35 cm)

    • School / Shell Chair: 15.7" × 15.7" (40 × 40 cm)

  • Material & Construction: Premium Oxford 100% Polyester fabric cover that is flame-retardant and certified as a CE-marked Class I medical device under EU Regulation 2017/745.

  • Care Instructions: Machine-washable up to 40°C (104°F) using standard quick-dry residential cycles.