Made in Belgium of silky viscose yarns, which look and feel like real silk at a fraction of the cost! The Abacasa Sonoma Kelso Charcoal rug collection uses a precise, machine woven technique, which provides many design options and color blends. Offered in a rich color palette, including reds, beiges, golds, chocolate browns and earth-tone greens. Abacasa Sonoma Kelso Charcoal rug design. Modern, geometric pattern. 100 percent nylon. Machine woven.