SIGMA R1 DUO ANT+ / BLUETOOTH Smart HR transmitter w/ Comfortex+ Strap For Rox 4.0 and Rox 11.1 (20332) model_helmet-meta Has a membrane lid that

Has a membrane lid that twists open and close with one quick and easy move

Discover the harmony of design and functionality as you explore a new level of comfort on your bike with this saddle

GET MORE USE OUT OF BALANCE BIKES: Trybike 2-Wheel balance bikes are designed for kids from 2 years of age to start learning balancing before transitioning to regular bikes

please refer to our compatibility chart for all models

SIGMA R1 DUO ANT+ / BLUETOOTH Smart HR transmitter w/ Comfortex+ Strap For Rox 4.0 and Rox 11.1 (20332) model_helmet-meta Has a membrane lid thatR1 Duo Comfortex+ transmitter incl. chest strap for Rox 4. 0 and Rox 11. 1 EVO