Feel anxious or stressful? Wanna relieve stress? These Luminous Balls are your perfect choice for pressure relief. Enjoy playing with these colorful and interesting and forget about stressful feelings. FEATURES - 4 pack - Fine stitching - Compact size & durable - Safe and durable TPR with high density SPECIFICATION Material: TPR Weight: 30g Size:2.5 inches (6.5 cm) NOTICE Please kindly know that the brand new luminous ball is very sticky. If you throw a brand new ball onto the roof or the ceiling, it might stick on the roof or the ceiling and will not fall off. After playing for a few minutes, the ball is not so sticky, and then throw it. PACKAGE CONTENT Luminous Balls for Stress Relief in Vivid Colors x 4