I am not overweight and only in my mid 20s Ever since I was little I've had these neck rolls. What can I do to get rid of them

Neck rolls are typically from localized fat collection in your neck. The reasons for this are multifactorial - for example "runs in the family", related to your weight, hormonal, congenital,etc. Liposuction using fine cannulas are very helpful for this. If loose skin is an issue then some non invasive treatments like Ultherapy, Thermage, Thermi-RF, or the Sciton Laser BBL SkinTyte are good options as well

"Injecting soft fillers like Belotero in this area can reduce lines, wrinkles and folds as well as improve skin texture with long-term collagen production. Fillers are being used more frequently to contour and lift rather than solely line fill. Of course, fillers are best used in combination with lasers and microneedling​ with PRP to get the optimal outcome.

I suggest getting a formal evaluation with a cosmetic dermatologist to create an individualized treatment plan that works for you. Best, Dr. Emer"

You are completely correct that this is not due to weight. It is likely due to genetics. Some people are genetically predisposed to having a double chin, and diet and exercise will never eliminate it completely. One procedure that could help would be liposuction of the neck to remove the fat and improve the contour to reduce the appearance of the lines. Liposuction is performed with tiny cannulas inserted through small ports or “dots” behind your ears that no one will likely see. Sometimes I also inject your own fat into the lines (the areas of depression) to further smooth out the contour. I recommend consulting with a board certified plastic surgeon in person to discuss your concerns and to determine if neck liposuction is right for you.

Unfortunately, horizontal neck creases are very difficult to treat. These lines are hereditary and can be quite noticeable even in very young patients. Some improvement might be possible with filler injections, Botox injections, and possibly even some laser resurfacing in some patients, but these lines are unlikely to show dramatic improvements or resolve completely even with aggressive treatments.All the best,

Per your photos,  great amount of laxity is not evident. So, you may benefit from #non-surgical treatments. I suggest consulting with a board-certified plastic surgeon to learn about the #options and products available and as to which  may be best for you.

For some reason the deposition of adipose tissue in your body has chosen the supraplatysma layer of the neck.

This is an area we address with liposuction. Being young does actually complicate things in this case and you need to do your best to keep a steady weight throughout the process if you choose to go forward. The good thing about being young is that the elasticity in your skin is present and abundant and will likely respond well to liposuction. Meaning the need for tissue tightening procedures is lessoned. 

In my hands I have found staged liposuction in young people with this issue to be very helpful. That is, plan on a liposuction session, then plan for a revisit/second look session to touch up the imperfections 3-6 months after that first procedure settles.  This is important in young people. It is unlikely your platysma muscle needs work at this age so the stage liposuction can offer opportunity for perfection.

Something to consider.

Best

DrC