MSP stands for metaphysical supernatural power - which is the understanding that true power is not self-generated. It is received from a source higher than flesh, circumstance, status, or human limitation, the unseen force behind life, purpose, creation, and truth itself. MSP is the act of aligning with that source so completely that spirit governs the body, conviction overrules all fear, and the invisible can now be seen.The back is filled with our latest adaptation of our HYPRCLOTH fabric typography. What is HYPRCLOTH fabric? Fit: Athletic modern cut Fabric: HYPRCLOTH™ Peruvian pima cotton HYPR CLOTH® v9 CREW NECK is ethically sourced, produced and printed in Southern California. Fabric technology: Peruvian Pima cotton Anti-Pilling Enzyme washed Phantom soft Pre-Shrunk Color Retention 4-way stretch Body forming over time 260 GSM // 9oz Pitchblack Dye Sustainable and Ethically sourced CARING INSTRUCTIONS:Flip shirt inside out before washingCold water onlyDelicate wash cycleHang dry Not sure on size? See the full fit guide.