{"locale":"en_US","availableSizes":["S","M","L","XL","2XL","3XL"],"modelMeasurements":{"description":"

Measurements are provided by suppliers.<\/p>\n

Product measurements may vary by up to 2\u2033 (5 cm).<\/p>","imageDescription":"

A Length<\/p>\n

Place the end of a measuring tape beside the collar at the top of the garment (high point shoulder). Pull the tape to the bottom of the item.<\/p>\n

\u00a0<\/p>\n

B Chest<\/p>\n

Measure yourself around the fullest part of your chest. Keep the tape measure horizontal. <\/p>","modelDescription":"","sizeTableDescription":"Product measurements may vary by up to 2\" (5 cm).","sizeTableRows":[{"unit":"inch","unitName":"Inches","title":"Length","sizes":{"S":[28],"M":[28.5],"L":[29.5],"XL":[30],"2XL":[30.5],"3XL":[31]}},{"unit":"centimeter","unitName":"Centimeters","title":"Length","sizes":{"S":[71.12],"M":[72.39],"L":[74.93],"XL":[76.2],"2XL":[77.47],"3XL":[78.74]}},{"unit":"centimeter","unitName":"Centimeters","title":"Chest","sizes":{"S":[83.8,91.4],"M":[94,101.6],"L":[104.1,109.2],"XL":[111.8,116.8],"2XL":[119.4,124.5],"3XL":[129.5,134.6]}},{"unit":"inch","unitName":"Inches","title":"Chest","sizes":{"S":[32.992,35.984],"M":[37.008,40],"L":[40.984,42.992],"XL":[44.016,45.984],"2XL":[47.008,49.016],"3XL":[50.984,52.992]}}],"imageId":4520,"imageUrl":"https:\/\/i0.wp.com\/big-gymwear.co.uk\/wp-content\/uploads\/2026\/09\/4519_model_size_guide.png?fit=344%2C344&ssl=1"},"productMeasurements":{"description":"

Measurements are provided by suppliers.<\/p>\n

Product measurements may vary by up to 2\u2033 (5 cm).<\/p>","imageDescription":"

A Length<\/p>\n

Place the end of a measuring tape beside the collar at the top of the garment (high point shoulder). Pull the tape to the bottom of the item.<\/p>\n

\u00a0<\/p>\n

B Chest<\/p>\n

Measure yourself around the fullest part of your chest. Keep the tape measure horizontal. <\/p>","sizeTableDescription":"Product measurements may vary by up to 2\" (5 cm).","internationalSizeTableDescription":"","sizeTableRows":[{"unit":"inch","unitName":"Inches","title":"Length","sizes":{"S":[28],"M":[28.5],"L":[29.5],"XL":[30],"2XL":[30.5],"3XL":[31]}},{"unit":"centimeter","unitName":"Centimeters","title":"Length","sizes":{"S":[71.12],"M":[72.39],"L":[74.93],"XL":[76.2],"2XL":[77.47],"3XL":[78.74]}},{"unit":"inch","unitName":"Inches","title":"Chest","sizes":{"S":[21.5],"M":[23.5],"L":[25.5],"XL":[27.5],"2XL":[29.5],"3XL":[31.5]}},{"unit":"centimeter","unitName":"Centimeters","title":"Chest","sizes":{"S":[54.61],"M":[59.69],"L":[64.77],"XL":[69.85],"2XL":[74.93],"3XL":[80.01]}}],"internationalSizeTableRows":[],"imageId":4521,"imageUrl":"https:\/\/i0.wp.com\/big-gymwear.co.uk\/wp-content\/uploads\/2026\/09\/4519_product_size_guide.png?fit=344%2C344&ssl=1"}}

Sweatpants

BIG – Glute Original Heavyweight Sweatshirt (Oversized)