Summary UA Storm water resistant technology Abrasion resistant bottom and side panels Large vented pocket for laundry or shoes 145 litre capacity 100% Polyester Under Armour Unisex 2021 UA Undeniable 4.0 Storm Water Resistant XL Duffle Bag Description Under Armour's tried-and-true UA Undeniable bag is back-and it just keeps getting better. Lightweight and built with incredibly durable materials, this is your go-to bag for everyday performance. UA Storm technology delivers an element-battling, highly water-resistant finish and tough, abrasion-resistant bottom & side panels keep the back coming back for more again and again. An adjustable HeatGear shoulder strap and padded top grab handle are provided for your comfort and a D-ring attachment point is perfect for a quick-access drinks bottle.