Size Guide
Correct sizing ensures comfort and satisfaction. 1Up Retro Clothing utilizes standard unisex sizing for all custom apparel. To determine your ideal fit, compare the measurements in the chart below with a T-shirt you currently own.
How To Measure Your T-Shirt Fit
Follow these 3 steps to obtain accurate dimensions. Note: These measurements refer to the garment’s dimensions while laying flat, not your body measurements.- Prepare the Garment: Place your favorite T-shirt on a flat, hard surface like a table or floor. Smooth out any wrinkles.
- Measure Chest Width: Measure straight across the chest, approximately 1 inch (2.54 cm) below the armhole, from seam to seam.
- Measure Shirt Length:Â Measure from the highest point of the shoulder (next to the collar) straight down to the bottom hem.
Unisex T-Shirt Size Chart
The following table displays precise dimensions in both Inches and Centimeters.| Size | Chest Width | Shirt Length | Chest Width | Shirt Length |
| S | 18″ | 28″ | 46 cm | 71 cm |
| M | 20″ | 29″ | 51 cm | 74 cm |
| L | 22″ | 30″ | 56 cm | 76 cm |
| XL | 24″ | 31″ | 61 cm | 79 cm |
| 2XL | 26″ | 32″ | 66 cm | 81 cm |
| 3XL | 28″ | 33″ | 71 cm | 84 cm |
| 4XL | 30″ | 34″ | 76 cm | 86 cm |
| 5XL | 32″ | 35″ | 81 cm | 89 cm |
Please allow for a 1-inch variance due to manual measurement.

