Premium Memory Foam Isolation Earphone Tips for Samasung Galaxy Buds2 Pro. The Bulletz are slow rebound memory foam in ear tips for many popular wireless in ear headphones. The Bulletz series was released on the market as an answer to non silicone ear tips having no way to safely be cleaned. All of memory foam ear tips are washable with cold soap and water. After drying with a paper towel are good as new!