Best Arched Back Stretcher
Best Arched Back Stretcher
Best Arched Back Stretcher
Best Arched Back Stretcher
Best Arched Back Stretcher
Best Arched Back Stretcher
Best Arched Back Stretcher
Best Arched Back Stretcher
Best Arched Back Stretcher
Best Arched Back Stretcher

Best Arched Back Stretcher

The current produc does not participate any Rebate. Switch the participating product to check the design.
(This prompt will not be displayed on the client-side.)
if(window.self === window.top) { (window.disabled_exts ||=[]).push('product_detail_rebate'); } class SpzRebateComponent extends SPZ.BaseElement { constructor(element) { super(element); } xhr_ = SPZServices.xhrFor(this.win); viewport_ = this.getViewport(); action_ = null; lang = document.documentElement.lang || 'en-US'; i18n = {"ar-SA":{"special_offer":"عرض خاص","close":"إغلاق"},"de-DE":{"special_offer":"Sonderangebot","close":"Schließen"},"en-US":{"special_offer":"SPECIAL OFFER","close":"CLOSE"},"es-ES":{"special_offer":"Oferta especial","close":"Cerrar"},"fr-FR":{"special_offer":"Offre spéciale","close":"Fermer"},"id-ID":{"special_offer":"Penawaran istimewa","close":"Tutup"},"it-IT":{"special_offer":"Offerta speciale","close":"Chiudi"},"ja-JP":{"special_offer":"特別なオファー","close":"閉じる"},"ko-KR":{"special_offer":"특별 메뉴","close":"닫기"},"nl-NL":{"special_offer":"Speciale aanbieding","close":"sluiten"},"pl-PL":{"special_offer":"Oferta specjalna","close":"blisko"},"pt-PT":{"special_offer":"Oferta especial","close":"Fechar"},"ru-RU":{"special_offer":"Специальное предложение","close":"Закрыть"},"th-TH":{"special_offer":"ข้อเสนอพิเศษ","close":"ปิด"},"zh-CN":{"special_offer":"特价","close":"关闭"},"zh-TW":{"special_offer":"特價","close":"關閉"}}; landPage = "\/promotions\/rebate\/"; pageType = 1; cart = []; initData = null; rebateInfo = null; renderData = null; footerImage = `${this.win.SHOPLAZZA["image_domain"]}oss/operation/e8ebb03dbb710457ca3b4b6a70898ab2.svg`; isLayoutSupported(layout) { return layout == SPZCore.Layout.LOGIC; } buildCallback() { this.initData = this.getProduct(); this.action_ = SPZServices.actionServiceForDoc(this.element); this.registerAction("triggerGetRenderData", () => { const event = SPZUtils.Event.create(this.win, "triggerGetRenderData", this.renderData); this.action_.trigger(this.element, "getRenderData", event); }); this.registerAction("bindPropagation", () => { document.querySelector(".product_detail_rebate_list").addEventListener("click", e => { e.stopPropagation(); this.win.sa && this.win.sa.track("plugin_rebate_promotion_click", { plugin_timestamp: Date.now(), plugin_location: "info", product_id: this.initData.product.id, discount_id: this.rebateInfo.discount_list.map((item) => item.discount_id)[0], }); }); }); } async mountCallback() { document.addEventListener("dj.variantChange", e => { const data = e.detail; if (document.querySelector("#product-select-modal.show")) return; if (this.initData && this.initData.product && data.product && this.initData.product.id === data.product.id) { this.initData = data; this.initRebate(this.initData, true); } else { this.initData = data; this.getRebateInfo(); } }); document.addEventListener("dj.addToCart", e => { const v = e.detail; this.rebateInfo && this.win.sa && this.win.sa.track("plugin_rebate_atc", { variant_discount_id: this.getVariantDiscountId(v.variant_id).map(item => item.discount_id), discount_ids: this.rebateInfo.discount_list.map(item => item.discount_id), variant_id: v.variant_id, product_id: v.product_id, price: v.item_price, number: v.number, }); }); await this.getRebateInfo(); if (document.querySelector(".plugin-container__bottom-fixed")) { this.showDiscountPopupsInfoBar(); } else { this.win.addEventListener("extloaded", () => { this.showDiscountPopupsInfoBar(); }); } } getProduct = (() => { document.addEventListener("dj.variantChange", e => { if (!e.detail || !e.detail.product) return; const productJson = document.querySelector("#product-json"); if (productJson && productJson.textContent && JSON.parse(productJson.textContent)) { productJson.textContent = JSON.stringify(e.detail); } if (this.win.jQuery && this.win.jQuery.fn && this.win.jQuery(document).data("djproduct")) { this.win.jQuery(document).data("djproduct", e.detail); } }); return () => { let productData = null; if (this.win.jQuery && this.win.jQuery.fn) { try { let product = this.win.jQuery(document).data("djproduct"); if (product) { productData = JSON.parse(JSON.stringify(product)); } else { productData = null; } } catch (error) { productData = null; } } if (!productData) { const productJson = document.querySelector("#product-json"); productData = (productJson && productJson.textContent && JSON.parse(productJson.textContent)) || null; } return productData; }; })(); initRebate = this.win.SPZCore.Types.debounce( this.win, ((data, variantChange) => { let discount_list = Object.assign([], this.rebateInfo.discount_list); /* 按子商品的多少对优惠信息进行排序 */ discount_list && discount_list.sort((a, b) => { return b.variant_ids.length - a.variant_ids.length; }); /* 选中子商品时 筛选子商品的优惠信息 */ if (data.selected && data.selected.id) { discount_list = this.getVariantDiscountId(data.selected.id); } /* 无满减信息 */ if (!(discount_list && discount_list.length)) { return; } const isSection = !!document.querySelector( `div[data-section-type^="shoplazza://apps/publicapp/blocks/rebate"] #rebate_custom_component` ); if ( (this.rebateInfo.rebate_type == "sku" && data && data.selected && data.selected.id) || this.rebateInfo.rebate_type == "spu" ) { if (discount_list[0]) { this.landPage += discount_list[0].discount_id || ""; } const info = { rebate: discount_list[0], maxShowCount: this.win.innerWidth > 768 ? 3 : 1, landPage: this.landPage, modalFooterImg: `url(${`${this.win.SHOPLAZZA["image_domain"]}oss/operation/e8ebb03dbb710457ca3b4b6a70898ab2.svg`})`, i18n: this.i18n[this.lang] }; this.renderData = info; SPZ.whenApiDefined( document.getElementById(isSection ? "app_rebate_section" : "app_rebate_block") ).then(apis => { apis.render(info, true); }); } this.insertSlideTag(this.rebateInfo.tag, variantChange); var pluginCurrencyEvent = new CustomEvent("plugin_currency_update"); document.dispatchEvent(pluginCurrencyEvent); }).bind(this), 10 ); getRebateInfo = async () => { if (this.initData && this.initData.product && this.initData.product.id) { var variant_ids = this.initData.product.variants.map(variant => variant.id); const res = await this.xhr_.fetchJson( "\/api\/discount-rebate\/product-discount", { method: "POST", body: { product_id: this.initData.product.id, product_type: this.initData.product.product_type, variant_ids: variant_ids, }, } ); if (!SPZCore.Types.isEmptyObject(res.rebate_info)) { res.rebate_info.tag = res.tag; res.rebate_info.rebate_type = res.rebate_type; this.rebateInfo = res.rebate_info; this.initRebate(this.initData); } else { if (this.win.top !== this.win.self) { const noActivity = document.getElementById("no-rebate-activity"); noActivity && (noActivity["style"].display = "block"); } } } }; getVariantDiscountId = (variant_id) => { if (!variant_id || !this.rebateInfo) return []; var rebateId = this.rebateInfo.variant_discount_map[variant_id]; return this.rebateInfo.discount_list.filter(item => item.discount_id == rebateId) || []; }; insertSlideTag = (tag, variantChange) => { setTimeout(() => { if (tag) { var tag_container; var modal = document.getElementById("product-select-modal"); if (modal && modal.classList.contains("show")) { if (!variantChange && modal.querySelector(".slider-discount-tag")) return; if ( variantChange && modal.querySelector(".slider-discount-tag:not(.rebate-tag)") ) return; tag_container = modal; } else { var product_detail_card = document.querySelector( '.page_container > [data-section-type="product_detail"], .page_container > [data-section-type="product-template"]' ); if(!product_detail_card) return; if (!variantChange && product_detail_card.querySelector(".slider-discount-tag")) return; if (variantChange && product_detail_card.querySelector(".slider-discount-tag:not(.rebate-tag)")) return; tag_container = product_detail_card; } if (tag_container.matches("#product-select-modal") && this.pageType === 13 && document.documentElement.clientWidth < 768) return; const tagDom = `<div class="slider-discount-tag dj_skin_product_title rebate-tag">${tag}</div>` if (document.querySelector(".sep-loaded-slider")) { var loadedSlider = tag_container.querySelector(".sep-loaded-slider"); loadedSlider.querySelectorAll(".slider-discount-tag").forEach(function(element) { element.remove(); }); loadedSlider.insertAdjacentHTML("beforeend", tagDom); } else { if (tag_container.querySelector(".support-slick")) { var supportSlick = tag_container.querySelectorAll(".support-slick, .sep-slider"); supportSlick.forEach((element) => { element.querySelectorAll(".slider-discount-tag").forEach((element) => { element.remove(); }); element.insertAdjacentHTML("beforeend",tagDom); }); } else { var sepSlider = tag_container.querySelector(".sep-slider"); sepSlider.querySelectorAll(".slider-discount-tag").forEach(function(element) { element.remove(); }); sepSlider.insertAdjacentHTML("beforeend",tagDom); } } if (document.documentElement.clientWidth < 768) { const sliderDiscountTagHeight = tag_container.querySelector(".slider-discount-tag").offsetHeight || 0; document.querySelector(".product-image__swiper_bullets").style.bottom = `${sliderDiscountTagHeight + 15}px`; } } }, 1000); }; fetchInfoBar = () => { let discount_ids = []; if (this.pageType === 1) { discount_ids = this.rebateInfo && this.rebateInfo.discount_list.map(item => item.discount_id); } else if (this.pageType === 38) { discount_ids = [this.win.rebateObj.rebateCollection_id] || []; } const productObj = this.getProduct(); return this.xhr_.fetchJson("\/api\/discount-rebate\/global-text", { method: "POST", body: { product_type: productObj && productObj.product && productObj.product.product_type, line_items: (this.cart.line_items || []).map(item => ({ variant_id: item.variant_id, product_id: item.product_id, quantity: item.quantity, price: item.price, selected: !item.unchecked, })), discount_ids: discount_ids, }, }); }; renderBottomBanner = res => { if (!res.tips) return; if (document.querySelector(".discount__info-bar")) return; var bar_style = `background:linear-gradient(90deg,${res.config.background_color_start},${res.config.background_color_end}); color:${res.config.color};`; let data = { tips: res.tips, landPage: this.landPage + res.id, bar_style }; const html = SPZCore.Dom.htmlFor(this.element); const banner = html([ `<a impr="1" imprevt="1" id="rebate_bottom_bar" href=${data.landPage} class="discount__info-bar text-truncate" data-activity-type="rebate" style="${data.bar_style}">${data.tips}</a>`, ]); document.querySelector(".plugin-container__bottom-fixed").appendChild(banner); const pluginCurrencyEvent = new CustomEvent("plugin_currency_update"); document.dispatchEvent(pluginCurrencyEvent); if (res.id) { var trackParams = { page: this.pageType, discount_id: res.id, product_id: this.getProduct()?.product.id, }; banner.addEventListener("click", () => { this.win.sa && this.win.sa.track("plugin_rebate_promotion_click", { plugin_timestamp: Date.now(), plugin_location: "bottom_bar", product_id: trackParams.product_id, discount_id: trackParams.discount_id, }); }); this.win.sa && this.win.sa.track("plugin_rebate_banner_pv", trackParams); } }; showDiscountPopupsInfoBar = () => { if ([13, 14, 19, 30, 31].includes(this.pageType)) return; if (document.querySelector(".plugin-container__bottom-fixed .discount__info-bar")) return; this.fetchInfoBar().then(this.renderBottomBanner); document.addEventListener("dj.cartChange", () => { this.fetchInfoBar().then(this.renderBottomBanner); }); }; } SPZ.defineElement("spz-custom-rebate", SpzRebateComponent);
Price
$79.99
$39.99
Save  50%
Quantity
  • Lightweight and packs flat - great for travel
  • Just lie down and relax for 5 minutes, twice a day
  • Adjustable to three levels for maximum stretch
  • Improves posture and increases flexibility
  • Relieves back pain,Lumbar Extender relieves back pain due to tight muscles, excessive flexion and poor spinal alignment. Simply lie down and relax for 5 minutes, twice a day to stretch the back muscles, and restore the natural curvature of the spine. Adjustable to three levels, Lumbar Extender improves posture, and increases flexibility and range of motion.