IMO leather is the best kid friendly material. I like cowhide it stays unstrectched and cleans up well just no indelible markers . We have white leather in our LR tons of aprtires grand kids 3 huge dogs and 15 yrs later they still look like new .

II agree, can't go wrong with leather. Just make sure it's not bonded leather. We have PB performance "suede" and love it, probably not for kids tho. I would trust their performance fabrics. I don't know anything about slipcovers.

I found this quote on woodstockoutlet.com

If durability and luxurious feel is most important to you, consider something made with a premium full grain leather. For the most affordable real leather upholstery on the market, a pigmented or protected split leather may be the answer. However, for the best compromise of durability, style and affordability, you may want to consider a high quality top grain leather.