Not that kind of pen tester - Short-Sleeve Unisex T-Shirt (black text)

Not That Kind of Pen Tester is a short-sleeve unisex tee that leans into tech humor with confidence—and comfort you can actually feel. It’s soft, lightweight, and flattering for both men and women, so you can wear it from late-night debugging to everyday boss-level casual.

Key Features & Design

• Material: 100% combed and ring-spun cotton (heather colors contain polyester)
• Fabric weight: 4.2 oz (142 g/m2)
• Construction: Shoulder-to-shoulder taping; Side-seamed
• Print: Bold black text across the chest
• Fit: Unisex sizing that’s flattering for both men and women
• Size range: XS–3XL; see size guide below

Size Guide & Fit Notes

Size guide (Length / Width):

• XS: 27" / 16 ½"
• S: 28" / 18"
• M: 29" / 20"
• L: 30" / 22"
• XL: 31" / 24"
• 2XL: 32" / 26"
• 3XL: 33" / 28"

The Male model is wearing a size M. He’s 6.2 feet (190 cm) tall, with a chest circumference of 37.7" (96 cm) and a waist of 33.4" (85 cm). The Female model is wearing a size M. She’s 5.8 feet (178 cm) tall, with a chest circumference of 34.6" (88 cm), a waist of 27.16" (69 cm), and a hip circumference of 37.7" (96 cm).