VIAHART Generic Medium Sized Plastic Building Blocks in Fancy Label Plastic Jar Cultivates spatial thinking, mechanical, engineering skills | Standard large building blocks for the budding builder! Every jar comes with more than 36 pieces | The pieces range in size from 1.75 Inches across to 3.5 Inches They do no interlock with Lego(R) or Duplo(R) | Recommended for ages 3+ SIZE AND WEIGHT | Product Measures 5 x 5 x 8 in inches | 12.7 x 12.7 x 20.4 in centimeters | Product Weighs Approximately 1 lbs / 0.5 kgs | These dimensions and weight do not include the packaging 30 day no questions asked return policy and FREE returns!