Medium, brand new Sena Outforce Bluetooth. 269 on Amazon.

The OutForce motorcycle helmet is packed with many features including:
Retractable Sun Visor
Bluetooth 5.0 connectivity
Integrated Speakers & Microphone
4-way Bluetooth Intercom
Smartphone App Compatible
Audio Multitasking
Three-Button Control

OutForce is DOT-rated with an intermediate oval fit and micro ratchet chin strap for secure placement. The helmet features an integrated retractable visor for convenient sun protection while riding during the day. OutForce was designed with chin and top vents as well as multiple rear vents in order to keep you cool throughout your ride. The sleek three-button control unit on the left side of the helmet allows for an intuitive user interface, making it easy to operate while riding.
RIDER TO RIDER INTERCOM
The OutForce helmet comes with a built-in Sena communication system, which is ready to go out of the box, no installation necessary. OutForce offers 4-way Bluetooth intercom like Arai

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