At 230g 20 inches. 4PCS clip in hair extensions of 20 inches.Each package includes:1 pieces of 4 clips(7 Inch Weft),1 pieces of 3 clips(6 Inch Weft),2 pieces of 2 clips(5 Inch Weft).This weight is within people tolerance.If you feel it’s too heavy.You can reduce the number of pieces you wear.Or you can trim the length to reduce the weight. Compared to traditional hair extensions,our clip in extensionss uses BB clips to fix,Needn’t tape, glue, no damage to the scalp and hair.In just a few minutes,you can get a new modern look.The most important is this set does not have any strange chemical smell like many other. Heat Resistant synthetic fiber soft and smooth.The synthetic hair extension is sewn by hand,it's may get tangled after wears and shed slightly especially the first time they are worn.We do try our best to minimize hair loss.To prevent it, you can take a spray bottle and fill it with water and put some conditioner in it,Spray it in the hair extensions and gently comb.