From pillow basalts through the colonnade to a brecciated top, this design covers all the major elements of a typical flood basalt flow... along with a few hidden paleontological and archeological secrets from the Columbia River Basalts, of course! All featured on this classic, staple tank top. A timeless volcanology classic intended for anyone looking for great quality and softness.
• 100% combed and ringspun cotton, lots of olivine
• Tri-blends are 50% polyester/25% combed/25% ringspun cotton/rayon
• Fabric weight: 4.2 oz/yd² (142.40 g/m²), triblends: 3.8 oz/yd² (90.07 g/m²)
• 30 singles thread weight
• Products made at factories in the US, Canada, Mexico, Latvia, Spain, Australia or Japan, whichever is closest to the destination
• Factories collaborate with Geocycle and Martex to recycle fabric waste
• Direct-To-Garment print style with OEKO-TEX certified eco-friendly vegan ink
Size guide
| BODY LENGTH | BODY WIDTH | |
| XS (inches) | 26 | 16 ¼ |
| S (inches) | 27 | 18 ¼ |
| M (inches) | 28 | 20 ¼ |
| L (inches) | 29 | 22 ¼ |
| XL (inches) | 30 | 24 ¼ |
| 2XL (inches) | 31 | 26 ¼ |