Besides a helmet, what protective gear does the MSF recommend riders wear on every ride?

The MSF recommends full protective gear on every ride, not just a helmet: eye protection (a face shield or goggles) to guard against wind, debris, and bugs; a jacket and long pants made of abrasion-resistant material like leather or reinforced textile; full-fingered gloves to protect the hands and improve grip; and sturdy over-the-ankle boots to protect the feet and ankles. Bright or reflective gear improves visibility to other drivers. The idea is to 'dress for the slide, not the ride' — gear that protects against abrasion and impact even in warm weather, when the temptation to wear less is greatest.