TM 10-8400-201-23 20-8.  RESIZING - Continued Table 20-18.  Shirt Sizes X-Small Small Medium Chest: Under 33 in Chest: 33 to 37 in Chest: 37 to 41 in NSN: 8415-01-228-1353 NSN: 8415-01-228-1354 NSN: 8415-01-228-1355 NATO Size: 7080/7484 NATO Size: 7080/8494 NATO Size: 7080/9404 Large X-Large Chest: 41 to 45 in Chest: 45 in and up NSN: 8415-01-228-1356 NSN: 8415-01-228-1357 NATO Size: 7080/0414 NATO Size: 7080/1424 Table 20-19.  Bib Overall Sizes X-Small Short/Regular X-Small Long Small Short/Regular Inseam: to 32 1/2 In Inseam: Over 32 1/2 In Inseam: to 32 1/2 in Waist: Under 27 in Waist: Under 27 In Waist: 27 to 31 In NSN: 8415-01-228-1323 NSN: 8415-01-228-1324 NSN: 8415-01-228-1325 NATO Size: 6783/5869 NATO Size: 8390/5869 NATO Size: 6783/6979 Small Long Medium Short Regular Medium Long Inseam Over 32 1/2 in Inseam' to 32 1/2 In Inseam: Over 32 1/2 In Waist: 27 to 31 in Waist: 31 to 35 in Waist: 31 to 35 in NSN 8415-01-228-1326 NSN: 8415-01-228-1327 NSN: 8415-01-228-1328 NATO Size 8390/6979 NATO Size. 6783/7989 NATO Size: 8390/7989 Large Short/Regular Large Long X-Large Short/Regular Inseam: to 32 1/2 In Inseam: Over 32 1/2 in Inseam: to 32 1/2 In Waist: 35 to 39 in Waist: 35 to 39 in Waist: Over 39 in NSN: 8415-01-228-1329 NSN: 8415-01-228-1330 NSN: 8415-01-228-1331 NATO Size: 6783/8999 NATO Size: 8390/8999 NATO Size: 6783/9909 X-Large Long Inseam. Over 32 1/2 in Waist: Over 39 in NSN: 8415-01-228-1332 NATO Size: 8390/9909 Table 20-20.  Undershirt Sizes X-Small Small Medium Chest: Under 33 Chest: 33 to 37 in Chest: 37 to 41 NSN: 8415-01-227-9547 NSN: 8415-01-227-9548 NSN: 8415-01-227-9549 NATO Size: 7080/7484 NATO Size: 7080/8494 NATO Size: 7080/9404 Large X-Large Chest: 41 to 45 Chest: 45 in and up NSN: 8415-01-227-9550 NSN: 8415-01-227-9551 NATO Size: 7080/0414 NATO Size: 7080/1424 20-27