This helmet-compatible fleece hood includes an integrated MFI-compatible neck warmer for seamless coverage to keep you warm and on the mountain through varied weather. FEATURES: The Anon MFI Fleece Helmet Hood fits over your helmet and connects to your MFI-compatible goggles with magnets, providing seamless head-to-neck coverage that's breathable to prevent fogging It's compatible with the M3, M2, Relapse, Relapse Junior, and the Tracker 2.0. The M4 and Sync Goggles require the (gray) XL carrier for the best fit The stretchy fleece is extra roomy to wear over your helmet. An adjustable cord lets you dial the fit Take the carrier out for machine washing or to wear the facemask with non-MFI goggles All Anon products are backed by a 1-year warranty from date of purchase