As a general rule, travel neck pillows don't offer any support, alignment, or comfort and are not recommended for travel. Even though neck pillows have existed for almost 100 years, there is no evidence, either personal or scientific, to suggest that these travel neck pillows have any efficacy.

The effectiveness of travel neck pillows is a subject of much debate among frequent flyers and ergonomic experts. Traditional U-shaped pillows are designed to support the head while sitting upright, but many travelers find they actually push the head forward, leading to neck strain rather than comfort. Research suggests that for a neck pillow to truly "work," it must provide enough lateral support to prevent the head from flopping to the side, which is the primary cause of waking up with a stiff neck. Higher-quality memory foam or "wrap-around" designs (like the Trtl or HEST) often perform better because they stabilize the neck's natural curve. However, cheap inflatable or microbead versions often lack the firmness required for real skeletal support. Ultimately, their success depends on your personal sleeping posture and the specific seat pitch of the aircraft; for many, a rolled-up airline blanket or a well-placed regular pillow often provides more customizable support than a standard store-bought neck ring.