Final answer:
Mask-shield combinations without the upper foam band should be worn over a cloth face mask for better protection.
Step-by-step explanation:
Mask-shield combinations without the upper foam band should be worn over a cloth face mask. This recommendation ensures better filtration of particles and adds an extra layer of protection. The foam band typically provides comfort and helps to secure the mask more tightly, but even without this foam band, a face shield should still be accompanied by another form of face covering underneath for optimal protection against airborne particles.