1、Round Corners: Constructed with exquisite plastic with clean, flat surfaces and rounded corners with no rough or cutting edges or barbs. Easy and safe to play, solid for long time use. 2、30PCS: Includes 30pcs 16mm/0.63in standard round corner game dices, will provide you with endless fun games. Great gaming supplies for game lovers, friend gatherings, parties and more. 3、Plastic Material: Made of high strength plastic material, these dices are reusable and wear proof, durable, sturdy, anti fade, scratch and impact resistant, waterproof and free from odor. 4、Light and Portable: These dice are lightweight and easy to carry, also make excellent teacher's aids, supplementing math lessons and encouraging simple arithmetic. 5、Multiple Applications: This 6 sided dice set is great for all kinds of board games, dice games, math games and educational games, and you can give it to your kids as a Christmas present.