Popsugar Fitness Food News Subway Halo Top Milkshake Halo Top Milkshakes Are Coming to Subway, and Yes, They're Loaded With Protein July 2, 2019 by Christina Stiehl First Published: July 1, 2019 View On One Page Photo 4 of 4 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Halo Top Hand-Spun Milkshakes Each milkshake has 350 calories or less and at least 20 grams of protein. Previous Next Start Slideshow Food NewsHealthy LivingSubwayHalo TopMilkshakesIce Cream