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Size Up White OG Long Sleeve Button Up
Size Up White Legacy Long Sleeve Button Up
Size Up White Legacy Long Sleeve Button Up 2
Size Up White Legacy Long Sleeve Button Up 3
Size Up White Legacy Long Sleeve Button Up 4

Size Up White OG Long Sleeve Button Up

Out of stock Many in stock

Size Up White OG Long Sleeve Button Up

What happens when you cross-up a tee, a dress shirt, and your body? You get the great look of Size Up’s White OG Long Sleeve Button-Up. Do not make any mistakes, this is not a shirt that is going to make you look like you belong on the cover of GQ or Fortune magazines. This is more likely to get you on the cover of a fitness magazine with its form-fitting design.

The shirt has a collarless neck and cuffless sleeves. The whole theory behind the shirt is to let you work in the real world, while still looking like who you are, a fitness extremist who looks great. The sleeves hug your arms to make sure no one misses there are muscles lurking under the soft cotton blend. The blended fabric makes the shirt lightweight and breathable, instead of the starched feeling of most button-up shirts.

The shirt features small tails which beg to be worn outside your pants, instead of restricting your motion by being tucked in. The shirt is available in small to XXL and fits perfectly at each size. If you need a shirt that lets you look like you’re succumbing to the demands of the corporate world while staying true to yourself, Size Up’s button-up shirts are the way to go!


Size Chart

 Size Chart 

Chest 38' 39.5" 41" 42.5" 44"



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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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