- The best subsurface Flies for rivers and lakes around the world- Over 50 Essential nymph patterns- Detailed Tying instructions, insights into material preparation, and tricks of the trade from one of the country\'s best tiers. - The best subsurface Flies for rivers and lakes around the world- Over 50 Essential nymph patterns- Detailed Tying instructions, insights into material preparation, and tricks of the trade from one of the country\'s best tiers