Hard synthetic, holes well spaced, does the job. Highly recommend this trimmer to anyone wants to save some money on quick eyebrows or facial hair treatment when required?? They feel light and cheap. Im so glad I did and you will, too. And the worst part is that broke in under 6 weeks Love the look and easy -wearing style of this boot. Buttons were firm but not sensitive. Length comes above your knees. Organized 6 bikes really well. Tevas are OK and are certainly one of if not the top name in this type of sandal.