I just received these in the mail today. The package came in good condition with some air bags to keep it from moving around too much.The pieces are kept in a drawstring bag that could be carried like a backpack which makes it a great toy to take on the go. The bag feels thick and durable which is perfect when you're dealing with toddlers and preschoolers. I think the stitching could've been done a little better on the seams of the bag but I'm hoping the toughness of the fabric will make up for this.Once I opened the bag I was a little surprised to see that the pieces were smaller than I imagined but it's ok because I realized this was under $20 so the amount fits the price. But the reason I mention the size is because I thought these were going to be compatible with pvc pipes that you can get from a regular home improvement store. Which is why I was excited cause then I'd have some colored pieces and could add onto it with white pvc pipes for cheap. However I will say that these would appear to work much better for playing with than pvc pipes because these can be pulled apart easily but stay together well enough to be able to build with them. Which I don't think you'd get that ease of play with pvc pipes. But I just wanted to mention that in case anyone else was thinking what I thought.I added pictures to my review so you can see the different pieces and how they compare in size to a mega block. The paper with ideas to build I think would've been better in small book form or at least laminated because it came wrinkled up and would get ripped in an instant by my little boys.I bought this for my children for Christmas so I can't attest to its fun factor and how it holds up yet but I will update with more details after Christmas. Feel free to comment if you have any questions.