Lake Atitlan Handmade Weekend Bag Rainbow Colored Weekend Bag. The complex Rainbow Colors can only be produced using the Back Strap Loom, native to the Mayan Culture of Guatemala. The fabric used is handpicked from a selection of Huipil hand-woven, backstrap loom-woven textiles. The fabrics are then hand-worked into various styles and trimmed with Guatemalan leather to make each bag represent the Mayan Culture of Guatemala.