Is the GMS Acamar WP fully waterproof?

It uses a waterproof polyamide shell with sealed construction, so it handles rain on normal rides. Long downpours can still let moisture in at the cuffs and collar if they are not cinched tight.

Does it come with a back protector?

Shoulder and elbow armor are included. The back protector pocket is usually empty, so plan on buying a CE-rated back insert separately.

How does it handle hot weather?

Ventilation is limited. With the thermal liner removed it is tolerable in mild weather, but it gets sweaty in summer traffic.

Should I size up or down?

The cut runs bulky, so most riders stay with their normal size or size down if they want a closer fit. Check the size chart against your chest measurement.

Can I wear it in winter?

Yes. The removable thermal liner adds warmth for cold rides, and the waterproof shell blocks wind and rain. Add a base layer for freezing temperatures.

Is it good for beginners?

It is a reasonable first jacket: waterproof, armored at the shoulders and elbows, and available in a wide size range. Add a back protector for full coverage.