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Thin Blue Line Flag


Printed, Designed, and Sold in the USA by Veteran Police Officers. A portion of every item sold is donated to first responder charities.

Shirt Product:        

Poly/Cotton Blend Material

Athletic Cut / S-2XL (If you like your shirt looser purchase one size larger)

Lightweight and Extremely Soft 

Larger Sizes: 


Available in sizes 2XL - 5XL for an additional $2.00 per shirt.


Sizes 4XL and 5XL are printed on a standard-cut cotton blend shirt.



Please allow (3-5 Days) for production before shipping, however, many times we have the product in stock and will ship out sooner.


We ship using USPS and FedEx. ReLEntless Defender does not control either entity therefore we are NOT responsible for any package(s) once it’s been turned over to the shipping provider. ReLEntless Defender is NOT responsible for packages that are late, stolen, lost, or packages sent to the wrong address (due to a customer entering error). The customer is responsible for filing all claims. ReLEntless Defender is not responsible for any package(s) once it is in the hands of USPS, FedEx, and/or UPS.

Size Chart: 



Body Length

Sleeve Length
























10 12

A portion of all sales is donated to police charities and families of fallen officers.

Don't forget you will receive FREE (Priority 2-3 Day) shipping on all orders over $75.00 - Use Promo Code - SHIP

Product Reviews

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Showing reviews 1-10 of 51 | Next

  1. Thin blue line flag t-shirt

    Posted by Brian on Feb 7th 2018

    The shirt seems to be very good quality. The fit is accurate. There is a little bit of stretch to the material. Colors are good. It exceeded my expectations. I have not washed it yet but hopefully it will wash well.

  2. Great fit

    Posted by Ethan on Jan 19th 2018

    If you have an athletic build with big shoulders these shirts are perfect! Im 6'2" 240lbs and these shirts hug me in all the right places. Far better than nike and under armor

  3. Satisfied

    Posted by Mike on Jan 4th 2018

    T shirt is great and very comfortable. This will be a great gift.

  4. My son loves the T-shirt!

    Posted by Unknown on Nov 16th 2017

    Comfortable to wear and my son loves the T-shirt and all of your products.

  5. Amazing shirt

    Posted by Michael Newman on Nov 3rd 2017

    I cant wait to give this to my wife for Christmas

  6. Great Shirt

    Posted by Timbo Duncan on Oct 8th 2017

    Exactly what I was hoping for!

  7. Strongly Recommended

    Posted by Cameron on May 29th 2017

    Will definitely be ordering more of their products. The athletic cut is perfect. I ordered the XL and it fits perfectly. It's soft and durable. Can't wait to get more.

  8. Awesome shirts, don't order too bif

    Posted by Kyle on May 26th 2017

    I was worried about the athletic cut being too small for me. I have broad shoulders, arms, and chest, but I'm only 5'8" 195lbs. Usually XL in that cut is too tight and not comfortable, so I ordered XL2 just in case. I got the shirts in and tried them on and they were baggy and loose. I thought they'd shrink some but these are really high quality shirts and they shrank very little!! Unfortunately it hangs on me now and looks like a mumu, so will definitely order XL in the future. It's my fault, not the companies. Awesome designs, comfort, and excellent t-shirt material so don't be afraid to order XL!!!

  9. Awesome shirt.

    Posted by Shane B. on May 19th 2017

    I ordered this Thin Blue Line t-shirt late last Friday night and received it exactly a week later on Friday. It looks great and is very comfortable. For anyone who is interested in the specifics, these are "Next Level Apparel" brand shirts (RN 111449) that are 60% cotton and 40% polyester. They are about a third of the thickness of the "Jersey" or "Hanes" printed t-shirts that I have. These are thin without feeling cheap. They are stretchy and perfect for hot natured people like me. They will shrink a little but overall not very much. I have custom printed work shirts that are also these same "Next Level Apparel" brand shirts that I've worn for the past 8 years. They have been washed and dried hundreds of times and hold up very well. I am 5'8" tall and 180lbs (very lean bodybuilder body) and the Medium that I ordered is snug without looking ridiculously tight on me. As advertised, they are "Athletic Cut" and are long enough to not ride up (for those of you who carry concealed, this would be an important detail). Based on the sizing chart they list, these do run a size smaller (meaning I could have ordered a large, which is what I normally wear in my work shirts). I laid out my shirt flat and took measurements, so I can tell you that if you look at their chart for a medium, those numbers are closer to what a large actually is, so their chart is a bit skewed. The actual measurements for a large are: Overall length from top of the collar at the back of the shirt to the bottom of the shirt is 28 1/2". Overall width across chest (shirt laid flat) is 21" (which would translate to a 42" chest). Overall measurement of shoulder seam to shoulder seam across the shirt laid out flat is 19". Sleeve length is about 8". Sleeve opening (laid flat) is about 6".
    Hope this helps someone with their decision on sizing.
    I highly recommend these shirts, and Relentless Defender based on my new purchase. I'll be wearing this shirt with great pride to honor my cousin who was killed in the line of duty last year.
    Keep up the great work, R.D.!

  10. Great Product - Fast Shipping!

    Posted by Brandon on Apr 16th 2017

    I'm very impressed with this order. First off, it arrived way ahead of schudule, and secondly, the quality was great. It looks great on my locker at work. Thank you!

Showing reviews 1-10 of 51 | Next