Helly-Hansen Women's Standard LIFA Long-Sleeve Crewneck Thermal Baselayer, 598 Navy, Medium

HH Lifa is a performance base layer, delivering lightweight insulation and comfort for everyday use and high performance activities. HH Lifa constructed with 100% Lifa fiber is quick-dry, very breathable and super lightweight. Continually perfected over the last 40 years, Lifa stay warm technology is the unique ingredient of all Helly Hansen base layers. Measuring Guide: CHEST:Measure around the fullest part, across chest points, keeping the tape horizontal. WAIST:Measure around the narrowest part (typically the small of your back and where your body bends side to side), keeping the tape horizontal. HIP:Measure around the fullest part of your hips keeping the tape horizontal. CENTER BACK SLEEVE:Measure straight from centre back neck to shoulder point, and from shoulder point to wrist with the arm in a relaxed position. INSEAM Measure from top of inside thigh to bottom of ankle, while standing with straight legs.