Ribbed Merino Mock Neck Sweater Banana Republic Ribbed Merino Sweater Polo Banana Republic Beck Fitted Crewneck Sweater Ribbed Merino :: Black M.M.LaFleur Merino Wool Crew Neck Sweaters J.Crew. The Beck top is like that long sleeve tee you always find yourself reaching forwith an elevated twist. Crafted from ribbed Merino wool and featuring a classic crewneck, its a cozy, sophisticated, seasonless staple. Made in China with fabric from China.