Brands like Kleenex are so popular they've become common words
Amazon.com: LastTissue® Reusable Cotton Tissue Pack – Sustainable, Durable, Eco-Conscious, Portable & Washable Facial Tissues for Men and Women with Travel Handkerchief Storage Case : Beauty & Personal Care
KLEENEX® Multi-Fold Towels – IVF Store
Kleenex Brand Cold Care With Menthol Facial Tissues 60 Ct Box 1996 Discontinued - Etsy Denmark