Hmm, is the position a little low/high? Please check your height and seat shape before purchasing! For those "152-165cm", please install the mounting base upside down. For those "160-180cm" and "176-182cm", use washers or spacers under the mounting base to adjust the height. Even with the same height, many people have different sitting heights, so we offer detailed after-sales support at Kurumarche Support. Also, please be aware that if the original headrest is extremely tilted forward, it may protrude too far. 【4-way adjustment (front, back, up, and down) x non-slip fixed type】fits you perfectly! You can adjust the height and depth within a range of 10cm up and down and 6cm front and back. You can operate it smoothly with buttons and paddles, achieving your ideal position even with different body types and heights. Furthermore, it is designed to be securely fixed to the seat pillars, so it won't slip or move while driving, providing stability. You can maintain a comfortable driving posture with this car headrest, which is comfortable even on long drives. It cannot be installed if the distance between the seat pillars is less than 10cm. We want to provide the best position for each customer, so adjustments are necessary each time it is shared with someone of a different height. 【Independently developed low-resilience cushion】 Initially, we applied memory foam developed for NASA spacecraft to achieve optimal elasticity and viscosity for driving. It fills the gap between the neck and the seat with a wrap-around fit, evenly distributing pressure on the head, shoulders, and cervical spine. As a car neck pillow, it supports comfortable driving by helping with fatigue recovery, blood circulation promotion, and muscle stiffness relief. 【Joint development by chiropractic method x professional designer】! Supervised by Mr. Kunitoshi Yukawa, the owner of the physical therapy and chiropractic salon "No Limit," and designed by Mr. Masatoshi Iizumi, a product designer who has worked on over 300 products. Thank you for viewing! ⑅◡̈* ◆ Brand new, unused item ✨ ◆ Ships the same day ✨ ◆ Immediate purchase is welcome ✨ Also on sale ❤️ #ayashop♡Shop Item List We have gathered many great deals! Please take a look ⑅◡̈*