Billabong Boundary Mock Neck Fleece Dark Blue Boundary Half Zip Mock Neck Fleece for Men Billabong Boundary Half Zip Mock Neck Fleece for Men Billabong Billabong Boundary Mock 3 Pullover Women's Clothing. Weather the trail ahead with the Adventure Division Boundary Mock 3 half zip pullover, an all weather essential blending functional outdoor design with bold color and contemporary design. Crafted with soft recycled fibers, this cozy performance layer keeps you warm and dry with a water resistant coating, waist pockets, and elastic binding. Features: Collection: Adventure Division collection. Eco Conscious Fabric: Recycled polyester. Shell Fabric: Cozy fleece made from recycled fibers. Technology: C0 DWR Coating Treatment (Durable Water Repellent). Shape Fit: Relaxed fit. Length: 26" hips (size M). Closure: Plastic zipper. Pockets: Waist pockets. Hem Finish: Elastic binding at sleeve opening.