Navy Math Sweatshirt — Retro Sailor Graphic "10? Equals 15!" Crewneck

This heavyweight garment-dyed sweatshirt carries a playful vintage naval graphic that feels like a laugh shared on the mess deck. The relaxed fit and medium-heavy 80/20 ring-spun cotton/poly blend hang comfortably over layers while the ribbed collar, cuffs and hem bring structure back to the silhouette. Small thoughtful details — a half-moon neck patch, twill neck tape and sewn-in label — keep the sweatshirt feeling broken-in but well-made. The graphic’s retro sailor characters and bold “NAVY MATH” headline read like an inside joke for anyone with a navy connection or a soft spot for throwback military style. Wear it on chilly mornings before watch, for evenings around a backyard fire, or when you want a familiar, easygoing piece that sparks conversation.

Product features
- 80% ring-spun cotton, 20% polyester medium-heavy fabric (9.5 oz/yd²) for a soft yet durable feel
- 1x1 ribbed collar, cuffs and bottom hem for stretch and shape retention
- Twill neck tape and half-moon back patch for comfort and seam stability
- Relaxed fit with sewn-in twill label — breaks in nicely over time
- Embroidery decoration available on left or center chest; OEKO-TEX® STANDARD 100 certified low-impact dyes

Care instructions
- Machine wash: cold (max 30C or 90F)
- Non-chlorine: bleach as needed
- Tumble dry: low heat
- Do not dryclean
- Do not iron