Euler Constant – Short-Sleeve Unisex T-Shirt

This is the perfect premium cotton tee: soft, lightweight, with just the right amount of stretch. With unisex sizing (see accompanying size chart) it’s comfortable and flattering for all.

Each shirt is printed to order, so please allow a few days for your order to ship.

If you have questions, or if there is a problem with your order, please let us know! In the case of any defects or quality issues, contact us within 14 days and we’ll be happy to fix it. Note that we are not able to offer refunds if you order the wrong size or ship to the wrong address.

We cannot guarantee arrival dates — but please place your order by the following deadlines for the best chance of your order arriving by December 21!

Size Chart

<div class='table-responsive dynamic' data-unit-system='imperial'><table cellpadding='5'><tbody><tr><td> </td><td><strong>XS</strong></td><td><strong>S</strong></td><td><strong>M</strong></td><td><strong>L</strong></td><td><strong>XL</strong></td><td><strong>2XL</strong></td><td><strong>3XL</strong></td><td><strong>4XL</strong></td></tr><tr><td><strong>Length (inches)</strong></td><td>27</td><td>28</td><td>29</td><td>30</td><td>31</td><td>32</td><td>33</td><td>34</td></tr><tr><td><strong>Width (inches)</strong></td><td>16 ½</td><td>18</td><td>20</td><td>22</td><td>24</td><td>26</td><td>28</td><td>30</td></tr></tbody></table></div><div class='table-responsive dynamic' data-unit-system='metric'><table cellpadding='5'><tbody><tr><td> </td><td><strong>XS</strong></td><td><strong>S</strong></td><td><strong>M</strong></td><td><strong>L</strong></td><td><strong>XL</strong></td><td><strong>2XL</strong></td><td><strong>3XL</strong></td><td><strong>4XL</strong></td></tr><tr><td><strong>Length (cm)</strong></td><td>69</td><td>71</td><td>74</td><td>76</td><td>79</td><td>81</td><td>84</td><td>86</td></tr><tr><td><strong>Width (cm)</strong></td><td>42</td><td>46</td><td>51</td><td>56</td><td>61</td><td>66</td><td>71</td><td>76</td></tr></tbody></table></div>