Virtually all of the major bedding manufacturers have either gone totally to that design, abandoning the two-sided design, or have allotted a healthy percentage of their products to it. mattress construction appears to be a one-sided issue
Bird Spider and Bird Eating Spiders. The Chinese bird spiders are venomous spiders capable of delivering a rather dangerous bite. Their LD50-value is low and in the same range as many loxosceles species (brown recluse spiders). Chinese bird spiders are tarantulas, just like the goliath bird eating spider is a tarantula. Chinese bird spiders are widely distributed in Asia and are abundant in Southern China.
The spider is a bit larger than the top of a soda can, and it's black except for a large, cobalt-blue band on its abdomen. The tarantula also sports blue markings on each of its limbs and the pincers by its mouth, Snyder said. The newfound spider isn't the only known blue tarantula. For instance, the greenbottle blue tarantula (Chromatopelma cyaneopubescens) is blue, as is the Gooty sapphire ornamental tarantula (Poecilotheria metallica). It's also common for tarantulas to live in trees, but the finding still raises all sorts of questions.