Fun for All! (Even the cats...) – We got this for my son (now 17) to help with his ASD therapy, so had it well over 10yrs & still going strong. It's been used by all 3 kids growing up as well as their friends (& even the occasional adult, especially me! Ha) The cats like to get on & be bounced around & chase balls, plus I have to leave it partially open at all times as apparently it's a perfect sunbathing spot... I've always limited it to 2 kids at a time but I know all 3 have been on together (without permission) when younger (& lighter!) & we haven't had to replace the mat (or anything else) yet... I've never used the sandbags as it is very stable, & so safe, especially compared to what I had growing up (ie countless flying off, caught in springs & other mishaps whereas we haven't ever had any accidents or issues with the Springfree trampoline)