Store › Spark Power 1.0 Image 1 of 2 Image 2 of 2 Spark Power 1.0 from $39.00 The Original Spark power shirt · 100% organic open-end cotton · Single jersey fabric · Fabric weight: 7 oz./yd.² (240 g/m²) · Dry, slightly rougher handfeel · Set-in sleeves · Side-seamed construction · Elastane-free 1 × 1 ribbed neck collar · Self-fabric inside back-neck tape · Wide twin-needle topstitching at the sleeve cuffs and bottom hem · Blank product sourced from Bangladesh Size: Select Size XS S M L XL 2XL Add To Cart Added! The Original Spark power shirt · 100% organic open-end cotton · Single jersey fabric · Fabric weight: 7 oz./yd.² (240 g/m²) · Dry, slightly rougher handfeel · Set-in sleeves · Side-seamed construction · Elastane-free 1 × 1 ribbed neck collar · Self-fabric inside back-neck tape · Wide twin-needle topstitching at the sleeve cuffs and bottom hem · Blank product sourced from Bangladesh