Bomb Bag - Durable & Stylish for Outdoor Adventures

I gave my son these bomb bags for his birthday. He had quite a bit of fun with them. The bags are rather hard to use if you have any hand problems. I tried and tried to pop the first one to get his attention before I gave them to him. I could not squeeze hard enough to pop the inner bag no matter how hard I tried. I ended up having my son squeeze the first one rather than using it to startle him. It didn't diminish the fun he had with them.I do wish they came with a caution though. After the bag pops, there is a liquid inside and it comes out. It didn't stain anything, or burn my son's hands, or bleach anything, but it would have been nice to know not to use these over carpet or surfaces that cannot be washed (like a wooden table or chair) easily.