Icebreaker - Siren Merino Long Sleeve Sweetheart. Color Gritstone Heather. Low Stock. On sale for $63.52. MSRP $85.00.. 4.7 out of 5 stars4 left in stock+2Brand NameIcebreakerProduct NameSiren Merino Long Sleeve SweetheartColorGritstone HeatherPrice$63.52MSRP: $85.00Rating5Rated 5 stars out of 5(7)