Premium Silicone 4-piece beginner dilator set for gradual dilation. Tapered for comfort and ease of use. Pliable and durable. Sturdy suction cup base. May be used in or out of the water. 

2.54 in x .51 in/6.44 cm x 1.3 cm (dilator 1) 
3 in x .76 in/7.64 cm x 1.92 cm (dilator 2) 
3.51 in x .87 in/8.91 cm x 2.20 cm (dilator 3) 
4.29 in x 1.03 in/10.89 cm x 2.61 cm (dilator 4)