Deepsea Blue - Premium FKM Rubber Strap (for Zenmaster) zenmaster strap Zenmaster slides through any shirt

Zenmaster slides through any shirt sleeve thanks to its extremely slim

thanks to our AR-coated sapphire glass

thanks to the quick release buttons on both bracelets

Zero skin irritation thanks to hypoallergenic materials and coating

Customize your Zenmaster look with selection of premium FKM rubber straps in a variety of curated colors

Deepsea Blue - Premium FKM Rubber Strap (for Zenmaster) zenmaster strap Zenmaster slides through any shirtCustomize your Zenmaster look with selection of premium FKM rubber straps in a variety of curated colors. FKM rubber is highly resistant to wear and tear, which is why it's often used in the aerospace and automotive industries. You'll notice when you pick your straps up out of the box that they're unexpectedly weighty. That's because of the super high density of FKM rubber. This is the highest quality rubber you can find. Switch between your included