{"locale":"en_US","availableSizes":["XS","S","M","L","XL","2XL"],"modelMeasurements":{"description":"

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.<\/p>","imageDescription":"

For all horizontal measurements, please keep the tape measure parallel to the ground.<\/p>\n

\u00a0<\/p>\n

A Chest<\/strong><\/p>\n

Put one end of the tape measure on the fullest part of the chest and bring the tape around the back (under the armpits, over the shoulder blades) to where you started.<\/p>\n

\u00a0<\/p>\n

B Waist<\/strong><\/p>\n

Place the tape on the narrowest part of the waist and measure around.<\/p>","modelDescription":"","sizeTableDescription":"","sizeTableRows":[{"unit":"inch","unitName":"Inches","title":"Chest","sizes":{"XS":[33.07],"S":[34.65],"M":[36.22],"L":[39.37],"XL":[42.52],"2XL":[45.67]}},{"unit":"centimeter","unitName":"Centimeters","title":"Chest","sizes":{"XS":[83.998],"S":[88.011],"M":[91.999],"L":[100],"XL":[108.001],"2XL":[116.002]}},{"unit":"inch","unitName":"Inches","title":"Waist","sizes":{"XS":[25.2],"S":[26.77],"M":[28.35],"L":[31.5],"XL":[34.65],"2XL":[37.8]}},{"unit":"centimeter","unitName":"Centimeters","title":"Waist","sizes":{"XS":[64.008],"S":[67.996],"M":[72.009],"L":[80.01],"XL":[88.011],"2XL":[96.012]}}],"imageId":13,"imageUrl":"https:\/\/shop.13thfrequency.com\/wp-content\/uploads\/2026\/05\/12_model_size_guide.png"},"productMeasurements":{"description":"

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.<\/p>","imageDescription":"

For all horizontal measurements, please keep the tape measure parallel to the ground.<\/p>\n

\u00a0<\/p>\n

A Chest<\/strong><\/p>\n

Put one end of the tape measure on the fullest part of the chest and bring the tape around the back (under the armpits, over the shoulder blades) to where you started.<\/p>\n

\u00a0<\/p>\n

B Waist<\/strong><\/p>\n

Place the tape on the narrowest part of the waist and measure around.<\/p>","sizeTableDescription":"","internationalSizeTableDescription":"","sizeTableRows":[{"unit":"centimeter","unitName":"Centimeters","title":"A","sizes":{"XS":[41],"S":[43],"M":[45],"L":[49],"XL":[53],"2XL":[57]}},{"unit":"inch","unitName":"Inches","title":"A","sizes":{"XS":[16.142],"S":[16.929],"M":[17.717],"L":[19.291],"XL":[20.866],"2XL":[22.441]}},{"unit":"centimeter","unitName":"Centimeters","title":"B","sizes":{"XS":[54],"S":[55],"M":[56],"L":[59],"XL":[62],"2XL":[65]}},{"unit":"inch","unitName":"Inches","title":"B","sizes":{"XS":[21.26],"S":[21.654],"M":[22.047],"L":[23.228],"XL":[24.409],"2XL":[25.591]}},{"unit":"centimeter","unitName":"Centimeters","title":"C","sizes":{"XS":[16],"S":[17],"M":[18],"L":[19],"XL":[20],"2XL":[21]}},{"unit":"inch","unitName":"Inches","title":"C","sizes":{"XS":[6.299],"S":[6.693],"M":[7.087],"L":[7.48],"XL":[7.874],"2XL":[8.268]}}],"internationalSizeTableRows":[],"imageId":14,"imageUrl":"https:\/\/shop.13thfrequency.com\/wp-content\/uploads\/2026\/05\/12_product_size_guide.png"}}

Women’s cotton crew neck t-shirt